50.4V 5A Charger for 12S Li-ion Battery Pack

Charger for Flash and Flash Ultra.
  • The charger is 100-240V and 50-60Hz, compatible with worldwide use.
  • Voltage: 12S 50.4V
  • Current: 5A
  • Input Plug: US/UK/EU/AU Plug based on your shipping country
  • Output Plug: DC2.1*5.5mm

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Charge Fast and Get Back Riding

Keep one at the office and one at home.

When you feel a little low on charge, give it a quick top-up wherever you are.

  • Compatible with all bound motor battery packs
  • Compatible with 18650/21700 battery packs
  • 5.5×2.1mm power jack charge port
  • 12S 50.4V output
  • Small and light, can be carried on commuting

If you want to extend the life of the battery pack, it is recommended that you use this charger, which can charge fast enough and will not overheat the components like some high-output current chargers.

Charging Time

  • Panasonic 21700 12s4p 19.8Ah: 4.6 hours
  • P42A 21700 12s4p 16.8Ah: 4 hours
  • Samsung 18650 12s3p 9Ah: 2.2 hours


Input 100-240V
Constant Charging Voltage 50.4V(12S Battery)
Constant charging Current 5A
Certification CCC, CE, KC, ROHS, FCC, SAA, ETL, PSE
Dimension 220.75*95.86*52.4mm
Net Weight 1.5kg
Various Protection Over current, Over Voltage, Over Temperature, Short Circuit, and reverse polarity.


  • Charger * 1
  • Power Plug * 1

Customer Reviews

Based on 8 reviews
brueggi (Baden, CH)
Great Charger

This originated Gojusin Charger is really a great product - quick, powerful and silent. thx a lot!

Ervin Abalos

The 4A charger will require a 5.5* 2.5 power adapter. It’s nice and compact not too heavy. Highly recommended! Nice product! A+ customer service.

This charger is DC2.1*5.5mm. if your charging port is DC2.5*5.5, you will need an extra adapter.

Dareon Lelond (Saskatoon, CA)

50.4V 4A Charger for 12S Li-ion Battery Pack

Gabriele Sinatra

I've tried it a couple of times but it seems work very well.

Joselito Remo (Sugar Land, US)
Well Built and Reliable 50.4V 4A Charger

I highly recommend this charger for 12S battery. Well built and reliable. Delivery was prompt and packaged well.