Feature: 1. FINE WORKMANSHIP: Use current, stable, ultra low internal resistance MOS and 2 oz copper thickness PCB. 2. SUITABLE BATTERY: Advised to use batteries with a capacity of 60 to 300AH, and the static current is 12 milliamperes. 3. UNDER VOLTAGE SLEEP PROTECTION: The board will immediately cease going into sleep mode if the voltage is lower than 3.0V. 4. WORKING CURRENT: Balance current ranges from 0‑5A, the lesser the current the better the balance, and the current in sleep mode is less than 0.1mA. 5. WORKING VOLTAGE: The working voltage ranges from 1.8V to 4.5V, with good efficiency and balance voltage accuracy of within 5mv. Specification: Item Type: Lithium Battery Balance Board Material: PCB Working Voltage 1.8V-4.5V Suitable for ternary lithium, Lithium iron phosphate, lithium titanate, Li ion for LiFePo4 LTO Battery Type: NCM,LFP, LTO Only available for lithium polymer and lithium iron phosphate battery battery pack versions LTO is lithium 2 ti 3 LPO is lithium ion lithium LFP is for LiFePo4 Current: 5A Battery Panel Size: Approx. 80 x 69.5 x 16mm / 3.15 x 2.74 x 0.63in . Package List: 1 x Lithium Battery Balance Board1 x 8pin Cable Note: Please allow 1 to 2in error due to manual measurement. Thanks for your understanding.