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Posted on January 14, 2020

One way to Rebuild Laptop Battery

10.8V 4.4Ah Laptop Battery

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Posted on January 10, 2020

Capacitive Active Battery Cell Voltage Balance

Capacitive active balance schematic

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Posted on July 17, 2019 July 17, 2019

Greenworks Elite Li-Ion Battery Charging

4 chargers with different production dates

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Posted on April 5, 2019

Rebuild laptop battery with 18650

The actual battery capacity is 15.44Wh / 10.8V =1.429Ah

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Posted on March 3, 2019 March 3, 2019

DIY 48V 20Ah 13s8p Electric Bicycle Li-ion Battery

Use 104pcs 18650, INR18650P Shenzhen Zhuoneng, 2600mAh 3C .

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Posted on February 12, 2019

DIY 21V 26Ah Lawn mower Li-ion Battery

6 pcs * 3.6V 26Ah , 21V 6.0Ah Battery , box

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Posted on December 28, 2018 December 28, 2018

Dewalt DE9000 is the same as DC9000

Positive Left 220V DE9000 charger, Right 110V DC9000 charger

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Posted on December 9, 2018 December 9, 2018

Valence U27-12XP Battery balance board communication

Valence U27-12XP Battery balance board, Software, USB to 485 adapter

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Posted on November 26, 2018 December 9, 2018

Battery pack balance interface BUG

20s8p 84V 20Ah Battery pack

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Posted on October 1, 2018 October 6, 2018

Dewalt 36V 3.5Ah DC9360 Battery Rebuild – Li-Ion replaces LiFePO4

Internal battery and BMS are broken.

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