E-bike charger
Use only the charger that came with your e-bike or scooter, or one its maker approves. Here's why, and how to charge safely.
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Battery and electrical safety. Lithium-ion batteries can catch fire if they're damaged or charged wrong. Never open a battery pack, and stop using any battery that's swollen, hot, wet or smells burnt. Every edit to this page is checked by a second person before it goes live.
The charger turns wall power into the voltage and current your battery needs. It is matched to your battery, so a replacement has to be one your device's maker supplies or approves.
Use only the charger that came with your device or a replacement the maker has tested and approved. CPSC warns that chargers sold as "universal" may fit the plug but still be incompatible, and using one can cause the battery to ignite (CPSC charger warning). If your charger is lost or faulty, contact the maker or find a shop.
What it's used for
Charging your battery. If the battery won't charge, the charger is one of the first things to check. Start with Check your charger and Battery won't charge.
What to look for
- The maker's own charger or an approved one. CPSC says to get compatible replacements from the device maker and to make sure any replacement is tested and approved for your device (CPSC). Bosch likewise says to charge only with compatible chargers (Bosch battery safety).
- Evaluated to safety standards. UL Standards and Engagement advises buying only chargers evaluated to safety standards and avoiding counterfeits (UL Standards and Engagement).
- Not a "universal" charger unless it is tested and approved for your device (CPSC).
Using it safely
- Stay nearby while charging, never charge overnight while you sleep, and unplug when done (CPSC).
- Charge in a dry, ventilated place away from sunlight, heat and anything flammable. Bosch gives 32 to 104 °F for its batteries (Bosch).
- Don't charge near an exit or in extreme temperatures (UL Standards and Engagement).
A charger or battery that gets very hot, smells odd, or hisses or pops is a warning sign (UL Standards and Engagement). Stop using it and have a pro check it.
Videos
Guides that use it
Sources
Guides that use this
- Aventon Level.2, Pace, Sinch and Aventure: battery won't charge in the cold, or W04 on the display
- Aventon Level.2: parts and specs
- Aventon Pace 500.3: parts and specs
- Hiboy S2, S2 Pro and KS4: E5 low voltage error or the battery won't charge
- How to check your e-bike or e-scooter charger
- Juiced Scrambler HT and FS: charger light stays red and never turns green
- Lectric XP 3.0, XP Lite and XPedition: charger light stays red or never lights
- Lectric XP 3.0: parts and specs
- Lectric XP4, XPeak 2 and XP Trike 2: E006 battery undervoltage, bike stops helping
- NIU KQi scooters: battery won't charge, charger light red or off
- Onewheel: won't power on or charge, charger light stays green
- Rad Power Bikes RadCity 5 Plus: parts and specs
- Rad Power Bikes RadExpand 5: parts and specs
- Rad Power Bikes RadRover 6 Plus: parts and specs
- Rad Power Bikes RadRunner 1 and RadRunner 2: parts and specs
- Rad Power Bikes RadRunner 3 Plus: parts and specs
- Rad Power Bikes RadRunner Plus: parts and specs
- Rad Power Bikes RadWagon 4: parts and specs
- Ride1Up Core-5: parts and specs
- Segway Ninebot E2 Pro: error 51, controller overvoltage after charging
- Super73: charger light flashes red, or stays green and the battery won't fill
- Velotric Discover 1: parts and specs
- Velotric Discover 2, Nomad 2 and Nomad 2X: battery indicator lights flashing
- Xiaomi 4 Pro (2nd Gen) and Scooter 5: won't charge, or the thermometer icon is lit
- Xiaomi M365, 1S and Pro 2: won't charge, or the charger light stays green when plugged in
If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.
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