1. I bought Usinenergy 32700 6ah screw on cells shipped and with taxes 2,17 euros to Finland and these cells are cheap and they seem to work well. I got 19,6 Wh with Arduino cell tester at 20A discharge and tested charging them with 20A also and cell didn't overheat that much and it took only 16 min from 0% to 100% using forced fast charge. I calculated that this cell has about 10 mohm of dc resistance what is pretty good. I need to test cycle life at these high discharge and charge rates but cell datasheet say that they should have 85% capacity after 2000 cycles at 1C.

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2. Cool I found this video :))) You need to charge slower and discharge lower. These seem to be C5 batteries, not so much 1C batteries.

   I have a pack of 60 of these cells. I did vast Internal resistance testing and the cells do vary slightly but not too much. Group the similar cells and build parallel racks out of those.

   I was able to pull 5200Mah out of them at lower current rates. Notice the voltage is sticky. After pull off even a small load that resting voltage will jump back up to almost full state V. Tricky batteries to work with, but more meant for power storage and small draws. I built a 7P7S. Better to have way more capacity than you need with these guys to keep the C-draw down and maintain that higher more consistent voltage. My 37amp pack can provide 15 amp draws and still not beat the batteries up past 0.5C draws. They get pretty warm at 1/2C.

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3. Please cut it open so I can see whats inside this lifepo4.

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4. Im looking for a 72v LiFePO4 10amp charger. Are the lithium ion chargers different?

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5. Could I use the 18650 lifepo4 cells on the cel holders you sell ???, help please

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6. great video!!!….my understanding is LiFe batteries should NOT be charged at the standard rate as LiPo's …but should be charged at at a much lower rate…example: I have been charging my LiFePo4 1700mah at a charge rate of 1.7 amps ( 1C ) …is this incorrect and too high… what is the recommended charge rate formula for a 1700mah LiFe battery ?….thanks

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7. Either used or b gra

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8. They sent you used or returned batteries

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9. Chinese LiFepo4 battery manufacturer –Topband,a public company ,welcome inquiry:E-mail: li-power.sales16@topband-e.com or zhouxn@topband.com.cn 
   Website: www.topband-e.com or www.topbandbattery.com

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10. what infrared lcd do y use for getting temp?

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11. 13.2 is not fully charged. 14.0 or 14.6. 100 w is 10A or 2C.

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12. Great video Jehu. What kind of charger have you used for charging the battery? Any specifics will help.

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13. harga baterainya itu berapa ya

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14. So how do RC car batteries provide up to 120 c continuous and don't even get warm

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