Multitester tested for voltage. Battery charger for lead-acid with the following:  DC output: 24V 1.8A  Round barrel connecter with 3 pin holes. Model number JY-100 or similar. This adapter is for many electric motor riding vehicles like the following:

Compatibility list

   RAZOR® E500 S Electric Scoote
   RAZOR® MX350 Dirt Rocket Electric
   RAZOR® E300 Electric Scooter
   RAZOR® Mini Chopper
   RAZOR® Rebellion Electric Chopper
   RAZOR® Dirt Quad Electric ATV
   RAZOR® E200 Electric Scooter
   RAZOR® PR200 Pocket Rocket
   RAZOR® Ground Force Electric Go-Kart
   RAZOR® Pocket Mod Electric Scooter
   RAZOR® E100 Electric Scooter
   RAZOR® E125 Electric Scooter
   Boreem Jia 601-S (250 watt version)
   Boreem Jia 602-D (250 watt version)
   City Express
   E-Scooter
   Freedom 644
   Freedom 943
   Freedom 961
   Panterra
   Rad2Go E5 Leopard Shark (some models)
   Rad2Go E10 Tiger Shark (some models)
   Star II E-Scooter
   Sunl
   Super Ride
   Turbo 350 EG
   Urban Express
   Vapor X-12
   Vapor X-24
   X-Treme X-50-300
   X-Treme X-250

Special heavy wrapping is provided to protect the prongs. S&H in the contiguous USA is $6.(insured shipping).

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