3.2V 32650 39000mAH lithium ion rechargeable battery , works in different kinds of heavy-duty commercial solar lights that require a 3.2V 32650 heavy-duty rechargeable battery and need an extended wire that comes with or without 2 pins to connect the battery to the device.This 39000mAH lithium ion rechargeable battery is ideal for solar street lights or flood lights that require a heavy-duty battery pack to have the light on constantly for all night. Due to its higher power storage capacity, this helps all solar lights and electronic devices to work for a longer time after a single charge.If you don’t require the 2-pin connector, you can cut off the pin and solder the red and black wires at the right place to connect the device to the battery.When you see any solar street flood lights aren’t working at all or not getting bright, in 90% of cases if you change the battery pack, the light will start to work again. Like any other electronic product, you may have to change the battery pack after a certain time. Sometimes, you may have to change the battery after 6 months to 2 years. we have seen battery can last over 3 years. This all depends on the usage, weather conditions, and the device you are using in it.It’s easy to replace the battery for all kinds of solar lights or electronic devices. Just unscrew the back of the light and replace the battery from the slot. You are required to solder the wire at the right place to connect and also use a long twist tie to hold the battery pack in the slot..You can also use this 3.2V 32650 39000mAH lithium ion rechargeable battery in BigM solar street lights, flood lights, power banks, toy cars, RC sports cars, RC robots, Scholl robotic projects, portable printers, battery packs for light electric vehicles, bicycles, scooters, gaming consoles, and various electronic devices, etc. wherever you require 3.2v 32650 batteries with an extended wire and with or without a 2-pin plug.