lithium battery charging board
$10.00
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this is a charging PCB for a lithium battery, maximum 4.2V. specifications: charges lithium ion battery up to 4.2V with a 5V 1A USB input source over-charge protection of 4.3V under-charge protection of 2.9V input specs: 5V 1A (USB standard) 180mA trans current red LED = charging, green LED = charged, blue LED = load on USB port (has footprints for adding 3mm breakout LEDs) ~ 50mm x 20mm x 9mm
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$7
$10
(+$3)