| Brand | Unbranded |
|---|---|
| Type | Fast Charging Module |
| Marke | Markenlos |
Check the listing for details. 4S PD 100W Bidirectional Fast Charging Module Buck-Boost 20V 5A with Display. Condition: New. Listed at 10.33 USD. The main board only has + and -. Soldering while energized risks burns from hand tremors. The motherboard's two wires cannot balance the battery; the balancing protection function resides on the lithium battery protection board.