Description:
(Please check for the details and make sure this is the right one you need.)
INPUT SPEC:AC100-240V 50/60HZ 3.2A
charging voltage: DC 42V
charging current: 4A
Charging mode: CC-CV
charge indicator:Red:Charging Green: Charged OK
Charger port: DC5.5mm*2.1mm
Cable length: 39.4 In / 100 CM
security protection: OVP(Overvoltage protection)/OCP(Overcurrent protection)/ OLP(Overload protection)/ SCP(Short-circuit protection)
Packing:
42v 4a battery charger*1
US plug cable*1

Fit for: all the 36V li-ion 5521 connector Li-ion / Lithium batteries
Don't use if your battery connector or polarity not fit.
Don't use for Lead Acid battery packs.
Don't use when the environment is wet.
Cut-off the AC when the battery is full charged.
Don't charge when the battery is broken.
Monitor the temperature of the battery the first time you charge. If the temperature is too high, cut off charging immediately. Feel free to let us know if you have any problem.

Charger Does Not Work , Steps for Inspection:
1.Please test the health of the battery before charging,（ the battery has been used for more than 12 months or not used for 2-3 months.）
2.If the green light is on when you plug it in, but the charger does not work when the battery is connected and the green light is still on. This is because the positive and negative (+/-) connectors of our charger do not match the size of your battery connector, you can try to change the connector to connect with your battery.
3.If there is a green light when you plug in the power. When the battery is connected, the green light goes off. The battery is short-circuited internally, causing the charger's self-protection function to fail. Please check your battery.
4.When plugged into the power supply green light, connected to your device LED shows red light means it has been working properly, after fully charged LED will become green light.