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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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However, one thing to consider is whether it's feasible to ship 'homemade battery setups' overseas given the world we live in now... I bring this up as some time ago, another person on these forums offered up a dual battery he put together. I bought it and had him ship it to me here in USA from his country overseas. Long story short, after waiting about 2 months or so for package to arrive in the mail, it never did, and I had to request a refund, which I got. But was unfortunate situation all the way around. Maybe it was just a fluke that package got lost or maybe as I suspect, customs people decided to intercept package thinking it was some other type of object, that gets people nervous about these days.... Hope you get what I'm trying to say... ;) Don't know if it would have been better to ship package via DHL or FedEx, etc...instead of relying on mail system..... Anyway, just thought I'd mention it.... |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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Always considered that and also other battery's like the 18650's |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Not really no, lately everything has just been a blur, so much going on + stupid holidays and such, getting hold of some proper 18650 seems to be a pain, almost everywhere you look in china you get a VERY high % of fake battery's.
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Hi there!
dr_frost_dk, how can I contact you in private? |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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http://talk.maemo.org/member.php?u=46995 |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Hi to all,before one week,i bought one battery from ebay http://www.ebay.co.uk/itm/PolarCell-...item5ae5cc9046
but till to day i can't see any difference than orginal battery,although the new battery is have capacity 1500mAh.Here my output from powertop: home/user # powertop Powertop 1.13.3 status: Unknown job: pmtrackerdaemon Sleeping for 11 seconds before sampling Collecting data for 30 seconds Sample interval was 00m 30s 14313us C# | Ratio | Avg/dura | Frequency | Ratio --------+--------+----------+-----------+--------+ C0 | 49.7% | | 1150 MHz | nan% | C1 | 0.2% | 0.7ms | C2 | 16.1% | 12.1ms | C3 | 21.1% | 87.8ms | C4 | 12.9% | 555.2ms | IRQ# | Activity | Type | Name --------+------------+----------------+--------------------------- 12 | 7095 | INTC | DMA 37 | 2166 | INTC | gp 86 | 850 | INTC | mmc1 67 | 413 | INTC | ssi_p1_mpu_irq0 56 | 392 | INTC | i2c_omap 11 | 251 | INTC | prcm 57 | 186 | INTC | i2c_omap 71 | 163 | INTC | ssi_gdd 311 | 162 | GPIO | ssi_p1_cawake_gpio 21 | 50 | INTC | SGX 225 | 7 | GPIO | omap2-onenand 25 | 1 | INTC | OMAP PID# | Activity | Name | Function Entry (Expire) --------+------------+----------------+--------------------------- 0 | 2001 | <kernel core> | tick_nohz_restart_sched_tick (tick_sched_timer) 1 | 80D| preinit | cpufreq_governor_dbs (delayed_work_timer_fn) 927 | 38 | mce | schedule_hrtimeout_range (hrtimer_wakeup) 44 | 33 | mmcqd | queue_delayed_work (delayed_work_timer_fn) 44 | 33 | mmcqd | cfq_completed_request (cfq_idle_slice_timer) 1262 | 28 | hildon-desktop | schedule_hrtimeout_range (hrtimer_wakeup) 1523 | 19 | osso-xterm | schedule_hrtimeout_range (hrtimer_wakeup) 820 | 19 | dsme | __enqueue_rt_entity (sched_rt_period_timer) 0 | 15 | <kernel core> | hrtimer_start (tick_sched_timer) 1563 | 11 | browserd | futex_wait (hrtimer_wakeup) 44 | 8 | mmcqd | schedule_timeout (process_timeout) 15 | 8 | kswapd0 | schedule_timeout (process_timeout) 856 | 7 | bme_RX-51 | sys_timer_settime (posix_timer_fn) 1576 | 7 | browser | do_nanosleep (hrtimer_wakeup) 1576 | 7 | browser | schedule_hrtimeout_range (hrtimer_wakeup) 905 | 6 | ohmd | schedule_hrtimeout_range (hrtimer_wakeup) 1567 | 6 | browserd | futex_wait (hrtimer_wakeup) 995 | 5 | Xorg | queue_delayed_work (delayed_work_timer_fn) 949 | 4 | sgx_perf | queue_delayed_work (delayed_work_timer_fn) 652 | 4 |<kernel module> | tsc2005_probe (tsc2005_esd_timer_handler) 995 | 3 | Xorg | hrtimer_start (it_real_fn) 820 | 3 | dsme | do_nanosleep (hrtimer_wakeup) 29 | 3 | mv | setup_wb_timer (wb_timer_fn) 1582 | 3 | browserd | futex_wait (hrtimer_wakeup) 15 | 3 | kswapd0 | blk_plug_device (blk_unplug_timeout) 856 | 2 | bme_RX-51 | sys_timer_settime (posix_timer_fn) 856 | 2 | bme_RX-51 | do_nanosleep (hrtimer_wakeup) 856 | 2 | bme_RX-51 | schedule_timeout (process_timeout) 1558 | 2 | browserd | journal_get_write_access (commit_timeout) 852 | 2D|<kernel module> | queue_delayed_work (delayed_work_timer_fn) 1 | 2D| <kernel core> | queue_delayed_work (delayed_work_timer_fn) 938 | 2 | gconfd-2 | ubifs_wbuf_write_nolock (wbuf_timer_callback_nolock) 1262 | 2 | hildon-desktop | queue_delayed_work (delayed_work_timer_fn) 927 | 2 | mce | queue_delayed_work (delayed_work_timer_fn) 1585 | 2 | Calendar | schedule_timeout (process_timeout) 1585 | 2 | Calendar | blk_plug_device (blk_unplug_timeout) 44 | 1 | mmcqd | schedule_timeout (process_timeout) 1540 | 1 |e-addressbook-f | blk_plug_device (blk_unplug_timeout) 1540 | 1 |e-addressbook-f | schedule_timeout (process_timeout) 1540 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1545 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1547 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 921 | 1 | csd | schedule_hrtimeout_range (hrtimer_wakeup) 1552 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1551 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1553 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1555 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1554 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1556 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1560 | 1 |e-addressbook-f | futex_wait (hrtimer_wakeup) 1558 | 1 | browserd | schedule_timeout (process_timeout) 938 | 1 | gconfd-2 | schedule_hrtimeout_range (hrtimer_wakeup) 927 | 1 | mce | schedule_timeout (process_timeout) 927 | 1 | mce | schedule_timeout (process_timeout) 1211 | 1 | signond | schedule_hrtimeout_range (hrtimer_wakeup) 1150 | 1 | sapwood-server | schedule_hrtimeout_range (hrtimer_wakeup) 1580 | 1 | browserd | schedule_timeout (process_timeout) 1580 | 1 | browserd | schedule_timeout (process_timeout) 1096 | 1 | dbus-daemon | schedule_timeout (process_timeout) 1579 | 1 | image-viewer | schedule_timeout (process_timeout) 1580 | 1 | browserd | journal_get_write_access (commit_timeout) 834 | 1 | dsme-server | schedule_timeout (process_timeout) 995 | 1 | Xorg | schedule_timeout (process_timeout) 1534 | 1 | powertop | do_nanosleep (hrtimer_wakeup) Power domain activity breakdown Domain | % of time spent in states --------+---------+---------+---------+---------+---------- usbhost |OFF: 100%|RET: 0%|INA: 0%| ON: 0%| now:(OFF) sgx |OFF: 95%|RET: 0%|INA: 0%| ON: 4%| now:(ON) per |OFF: 33%|RET: 16%|INA: 0%| ON: 50%| now:(ON) dss |OFF: 23%|RET: 0%|INA: 0%| ON: 76%| now:(OFF) cam |OFF: 100%|RET: 0%|INA: 0%| ON: 0%| now:(OFF) core |OFF: 4%|RET: 0%|INA: 39%| ON: 55%| now:(ON) neon |OFF: 12%|RET: 21%|INA: 15%| ON: 50%| now:(ON) mpu |OFF: 12%|RET: 21%|INA: 15%| ON: 50%| now:(ON) iva2 |OFF: 100%|RET: 0%|INA: 0%| ON: 0%| now:(OFF) Clock activity breakdown at end of period Domain | Active clocks --------+---------------+---------------+------------------ core | SDRC | HSOTGUSB_IDLE | OMAPCTRL | MAILBOXES | MMC2 | core3 | USBTLL sgx | SGX wkup | GPT1 | 32KSYNC | GPIO1 | WDT1 | ckgen | CORE | PERI | 96M | 48M | 12M | 54M | EMU_CORE | per | GPIO2 | GPIO3 | GPIO4 | GPIO5 | GPIO6 | Total wakeups 14140, 471.3/s | IRQ 11736, 391.2/s | Timers 2404, 80.1/s HW wakeups 251, 8.4/s | Real gp_timers expired 118, 3.9/s /home/user # edit:I am with kp50,multiboot+backmenu+droid 2.3.4 and libglib2.26 |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
@ disappear: (unless I musunderstand you) the simple benefit of a polarcell (or any battery) with a proven capacity higher than the stock Nokia one ca. 1350mAh is that you have more juice and thus longer usage.
Powertop will not show this per se, as it records the phones energy consumption due to various processes and components and best allows one to see what you might stop running or change how it runs. |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
What about using a watt meter and an tenergy b6+ multi chemistry charger balance charger to test the charge/discharge mah ratings? You want to be careful, but i think with a arduio pin headers, and female female pinleads to a balance port, inline with the wattmeter you could get a very accurate battery health reading. Can set discharge/charge mah ratings as well.
Might just try this on my n810's 1500mah lipo to see how it works. |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
is it possible to set VDQ to 0 by script (without restart/connecting - disconnecting the charger)?
I want to run it in order to always avoid recalibration of the battery power. |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Even if it would be possible, every cycle (even when no re-calibration done), updates capacity for a 1% or so lower one. It's build-in hardware chip.
May I ask why you want to avoid recalibration? It sounds quite counter-productive, unless you swap batteries of different sizes, every cycle. /Estel |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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i sometimes use a dual battery and sometimes single and i have scripts to display battery level in both modes (the device is calibrated for the dual battery, and my single battery script uses the same as the dual, but cuts the values by half). i want to avoid recalibration by accident when using the single battery. |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Hi everybody .i'm new here i make something you talking about 9600mAh battery on my nokia n900 .. for just 20 dolars .when finist project totally i'll take photos :)
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Hello. I mentioned several pages back I had one of the new nokia bl-5j batteries that come with newer Nokia phones (this one from an X1-00). I've had it I most a year I suppose. Not done major duty except trying to get the built in chip to stop registering at 2044mAh.. Using bnf and the bq scripts for battery monitoring. Anyway, just to say got 1415mAh discharge for what is reported as a 1430mAh cell. So, guess it comes above reported..
EDIT: I say it comes in above reported mAh because it is an old battery ie most of a year old and having been used during that time. Using the bq27200.sh script and fully discharging the battery without charging after reaching "VDQ 1" gives me a measured discharge of 1415mAh. I would like to add, getting from the 2044mAh registered charge level (takes 3x calibrations with a normal battery) is not easy as sometimes (yes following all of the guidelines) the phone turns off before the voltage goes below 3.248v. That said, bnf and the bq27200 i2cget scripts make for a truly fantastic tool and once calibrated bnf is a deceptively simple, very accurate battery "tank" level tool. Thank you Estel and everyone else (shadowjk, et al) who made it possible! |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Yesterday, I was building new dual battery from 2 scud bluedream cells, as my 1st dual-scud was getting really worn (~2100 mAh reported, as opposed to original 3100+ mAh). I've made it usking cells, that dr_frost_dk sold me looong time ago - time goes fast so I'm not sure about exact date, but surely, it was more than a year ago.
I've kept that cells between 20%-80% charge - to be precise, from times to times, I've charged them to 4.200 mV (without saturation phase, aso as soon as it hits 4.200 mV with 500 mA charging, I stopped charging, to not stress battery - what I did on this phase is called "fast charging" in Li-Ion world), then, discharged them to 3.800 mV, and kept them this way in dark place, room temperature, for next few months. After that, I did same as above. The result is, that finished battery report 3010 mAh when discharged to 3000 mV at constant 300 mA rate. It means, that during variable rate discharge (real-life N900 usage), relative capacity will be much higher, 3100 mAh at least, or even more (thumbs held). Conclusion - those cells, when properly stored, virtually doesn't lose any capacity at all. While I suspect that they were quite fresh at time dr_frost_dk bought them, it's still nice, how well they keep capacity during storage. --- I've took many photos during assembly, and I'm preparing some nice things for (wanna-be) battery constructors - I think both absolute newbies, and experienced dual-batt creators may benefit from it much. Stay tuned for Estel's N900 workshop, issue 1 :) /Estel |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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I should really get in gear and remake a dual scud for my N900, i have been using a single Polarcell for some time and for the most of the time it is good enough but sometimes i almost run out of juice and my "stand" on the XL cover is better ten original cover |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
2 Attachment(s)
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9600mAh battery !!! |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Not pretty but thats a lot of juice.
So whats your run-time - 6 days? |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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i will make tests and share results look much better than on pictures it is not so bad |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
So that's wired into the n900 circuit and charged via the n900 usb port?
If one wants a great hiking GPS (mapsi, modrana) and camera that sort of thing is a great modification.... |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
So that should do 7 days of fairly constant usage, eh? :P
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
Looks nice and I absolutely support such ideas, but 9600 mAh still seems doubtful. From the picture, it looks like you're either using 4x ~14500 Li-Ion (model, not capacity), or even NiMH's (I hope not, for your device's sake).
Even taking into account possibility of 4x 14500, they would hardly get 9600 capacity in real life. Even 8000 mAh would be very good result. It is just what they've sticked on label, or you've actually did on-device measurement? Generally, more technical details, please. Cells, who produce them, where bought, what you've used to mount with N900... /Estel |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
bogdanov_s, can you please tell us what cells/battery's you are using as estel says it looks like 14500 or AA battery's
If it is 4x AA battery's you don't have 9600mAh you have 2400mAh, sorry but this is how battery's work If it is 14500 you will be looking at a MAXIMUM of 4000mAh but more likely it will be 2800mAh |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
I hope he answers, as I am curious. Must say tho', judging by the outlines it looks like just two equal-sized "cylinders" in there. If right, about AA in length but fatter - 18500s?
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
poor 900...it's thick enough as it is. Buy extra batteries and swap 'em out.
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
sorry for my delay but i have work
The battery type are 18500 li-ion (as original battery) 3.7v 4800 mAh two pieces of them batteryes are only 2 the original battery is remove and it work very nice for now i charge them with usb charger ~1 A this is secong charge for them since i buy them so .. i don't have what other to say for now .. befor do that i have only one battery of this type and the result were good i think battery lose only 20% on music some time and web browsing for about 7 days .. i dont have enought patience for full test .but with this battery i'll do that only i have one question how i can get real battery status on my n900 and what is the most powerful charger witch is safe to use 2 A or more |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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http://talk.maemo.org/showpost.php?p...postcount=1176 Also, if you search this thread (using thread not site search function) for the word "calibration" you will find various discussions. You WILL have to be patient though and let that monster run down. |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
There is no such thing as 4800 mAh Li-Ion 18650(or any other type of comparable size). The're fake, I suppose max 2Ah capacity for each, totalling at 4000 mAh - just a little more, than what you would get with "inside" battery of mugen cover.
The biggest 18650 I've seen that got confirmed capacity, are 3000 mAh 18650 from phillips or panasonic (one of those two, not both I always mix those two marks). They're quite expensive, but using them, you would get 6000 mAh. /Estel |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
as far as i can see i can only find 18500 in 1600mAh but this still adds up to 6400mAh and this should give some SERIOUS runtime when looking at our dual SCUD/Polarcell battery's,
But i can see that 2400mAh should be doable in a 18500 Package, estel it is 18"500" not "650" he is using, but i will say that you have to provide a link at where you bought them then i can test them and see if they really hold 2400mAh, and even more not to believe the HIGH capacity is that you state it only costs 20$... So please submit a link to the battery's, i would love to do a 6000+mAh battery and if you actually got cheap 2000+mAh battery's then even more awesome, but as this thread shows MANY battery's are to good to be true when they slap on fake labels like some of the 2400mAh BL-5J.... |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
after a pretty broad search im only finding 1400-1600mAh 18500 cells, but again we are looking at a 5000-6500mAh battery then, that's pretty good, im going find some and order and make a special battery just like bogdanov_s and we will see what capacity it will have
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
I believe he has just 2 cells in that wrap of his. He ids them as 4800mAh thus giving the 9600 ttl. If you are correct and ca. 1500 is a more realistic capacity, that is about the same as a dual scud/polarcell setup.
This is the same game as with the replacement "stock" batteries. As dr_frost_dk has shown in many cases it is "liar , liar your capacities on fire...." |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
sorry but i can't give you a link i bought them form shop call "Elimeks"
that was the last 2 peaces in my country of them , and they want tell me from where they charge the shop i'm from Bulgaria real price is 13,90 lv which mean 27,80 lv for two of them and 18,453362 dolars i have one more cell of this which are on phone , i make portable charge from one frend i cane make picture of it if you don't belive and its real my run time at the moment is 20 hours for about 6-7% battery , not stand by - normal usage |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
It's not that we don't believe you but i started this thread to find the GOOD vs FAKE battery's and also to build the bigger battery for more runtime, now i have ordered 2x "1600mAh" 18500 cells so far for testing and to see how they fit in the N900.
Still i cannot read some details of what you wrote.. So can you again just write: * How many battery's/cells are you using? (2 or 4?) * What kind of battery's? (LiFe/Li-ion/LiPo, 3.2V/3.7V) * What are the capacity pr battery? (2400mAh?) |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
http://lorienart.pl/dual-bluedream.png
Results of my dual-bluedream scud mentioned here: http://talk.maemo.org/showpost.php?p...postcount=1490 ...after 3 calibrations (quite heavy usage, too - not standby to get most relative mAh). I'm really impresed, it's much more than my first dual battery made of first scud serie, when fresh. It's also in line with other people's tests (single modern bluedream or polarcell for ~1700 mAh), and my external 300 mA constant-discharge results (~3000 mA) - as suspected, relative capacity during variable discharge is much higher, and halved current per cell also contributes some. When gaing of variable discharge + dual-cell setup is "some" measured as 400-500 mAh - 1/3+ of standard vanilla battery size - I definitelly like it :D /Estel |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
i use two batteryes each of them is li-ion 18500 3.7V 4800mAh
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Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
ok but im sorry to say that they are fake, MAX capacity for 18650 (bigger then 18500) are about 3200-3500mAh so no way that your 18500 are 4800mAh, do you know someone with an RC charger? then they can test the actual capacity.
As far as i can see the max capacity for 18500 is still under 2000mAh but technically it should be about 2400mAh MAX capacity for that size. Only way your battery's can be 4800mAh is if they have some of the new tech that's being developed, but price should be 200$+ then. |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
i think that capacity is correct because when my nokia was with 1 that 18500 and standart battery not original 1320mah but about 1000 mah
the sum capacity ~ 6000mah charge time with 1A charger was about 5h 30 min - 6h i will test them when i can . |
Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
You can also test them on device, via calibrating bq27x00 chip. See my signature for howto.
But don't expect miracles, there is limit of how much capacity you can put inside cubic cm in Li-Ion ;) I'm perfectly sure that you have ~same capacity with this strange design, as we got with dual-scud/polarcell setup inside mugen cover. /Estel |
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