Level Lithium 5-30V Tester Lead Acid Li-ion Battery Capacity LCD Display Module
ab 3,14 €
Red light=lithium ternary battery. Green light=lithium iron phosphate battery. 1: Press and hold the key for 2 seconds to enter the setting state: the mode light (battery 1 type) flashes, and the string number light is always on; Briefly press the key to select the battery type.
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