Lithium LiFePO4 conversion of 12V cordless string trimmer - Black & Decker CST1200 weed whacker

Lawrence Francis
Lawrence Francis
550
0
Published 2022-03-31
A dead sealed lead acid battery in a Black & Decker trimmer affords an opportunity to upgrade to LiFePO4 cells, using a dedicated preconfigured battery manager (BMS). The rebuilt trimmer runs 3x longer and charges 10x faster.
Links
LiFePO4 cells: batteryhookup.com/products/16-k2-26650-3800mah-lif…
DALY BMS: www.ebay.com/itm/234357118776?ssPageName=STRK%3AME…
The cells were a liquidation sale so may only be available for limited time.

Chapters:
0:00 Dead trimmer
3:48 Battery choices
8:08 Battery manager (BMS)
9:48 Wiring & pretest
14:05 It runs
15:50 Charger choice & testing
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