TELESIN Battery Safety Guard Adaptom3 SE USB Charger and Discharger Adapter for DJI Phantom3 Standard, Advanced, Professional and 4K Quadcopter Drones

Seems to work fine to discharge my lipos. I use the light and be careful because it gets HOT. I don't recommend touching it after its been on for awhile. Handy little USB plug on the side can be used to charge your phone or other gadgets with the leftover battery power or if you need a battery pack to go...I love these products that can make multiple uses out of something. Probably a good item to have around your batteries.

Great

Very nice product for draining batteries the phone charger option is geniuos.

works

Very handy to have and does it's job

works very good

Seems to work fine when to cold to fly batteries down.

It works as a discharger (though it does take some time) but it's actually really useful for keeping your phone/tablet charged up in the field. I recently used it to reset a battery that was reporting mAh incorrectly in the DJI app - battery showed 4 LEDS, but read 71mAh available! - so it's easily paid for itself.

Works good

Great Item