Slim 400 x4 LiPo USB Charger
Slim 400 x4 LiPo USB Charger

Slim 400 x4 LiPo USB Charger

P/N: S2023


Charge up to four LiPo 400mA batteries simultaneously with the Graupner USB Slim400 x4 USB Charger.  The Slim400 x4 is the ideal companion for the Alpha 110 as it is specially designed to charge our single-cell LiPo batteries such as the LiPo 1S 500mAh (P/N S8490) and LiPo 1S 350mA (P/N S8489).


A USB Interface Cable or USB Micro Connector is required to plug the Slim400 x4 into a PC, tablet or SmartPhone device.


  • SLIM400 x4 Charger

Super simple to work. Red light, not charged. Green light, charged. Doesn't come with a cable, but its just a micro USB. Would recommend not plugging the usb charging cable into a computer. Find a good wall to usb adapter. Glad I bought it, would buy again.
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Reviewed by: (Verified Buyer)  from Salt Lake City, Utah on 2/2/2017
Nice 1S charger
This is my second one since I gave my first one to my brother for his Alpha 110. I've seldom bought the same item twice. It's nice that it uses a mini USB. An Asian charger I have takes a proprietary one and its a pain if forgotten. It's got an easy GUI. Green means GO. You can see the LEDs from afar. It has a solid quality feel and compact. On the first charger I foolishly tried to charge a damaged battery I drained to zero (lost quad for 3 days). It puffed but the charger port disabled it. The port still worked after removing the battery. Not sure if it was a fail safe feature or luck but lesson is don't charge damaged batteries.
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Reviewed by: (Verified Buyer)  from Sugar Land TX on 12/8/2017