Instructions: When a new battery is used for the first time, the rated voltage value is close to the actual value. To judge the stop discharge voltage, a reasonable discharge voltage value can be obtained according to the universal voltage calculation method of the battery.When the old battery is used, the actual voltage value and the rated voltage value are quite different, so you need to measure the end voltage value in actual use.Battery charging usually uses slow charging (fast charging can be relatively large in voltage and current, but it is easy to damage the battery.) The charging voltage of slow charging is 1.2 times the rated voltage, and the charging current is adjusted to about 2/10 of the rated capacity current of the battery. For example: the charging voltage of a 6V 50Ah battery is about 7.2 volts, and the charging current is adjusted to 10A.Reference formula: charging voltage = rated voltage X1.2 charging current = rated current X0.2Product name: Battery over-discharge protection modulePower supply voltage: DC 12-36VOutput voltage: equal to the supply voltageControl accuracy: 0.1VPower consumption: less than 1.5WRange of use: various storage batteries/lithium batteriesNet weight: 28gProduct size: 57 x 42 x 19mmScope of applicationApplicable to all electric two-wheeled tricycle batteries within the applicable voltage range; Discharge protection of car batteries and new energy electric vehicle batteries; Over-discharge protection of various batteries; Solar, wind and other power supply systems.Colour: as shownMaterial: plasticPackage Contents:1 x XH-M609 DC voltage protection moduleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.