eBike chargers are labelled by their output voltage, not the battery’s nominal voltage. A “42V charger” charges a 36V (10S Li-ion) battery; a “54.6V charger” charges a 48V (13S) pack; a “67.2V charger” charges a 60V (16S) pack. Using the wrong one can fail to charge or damage the pack. Here is the full map.
The Voltage Map (Nominal → Charger)
| Battery nominal | Cells in series | Charger output |
|---|---|---|
| 36V | 10S Li-ion | 42V |
| 48V | 13S Li-ion | 54.6V |
| 52V | 14S Li-ion | 58.8V |
| 60V | 16S Li-ion | 67.2V |
| 72V | 20S Li-ion | 84V |
How to Find Your Battery Voltage
Check the label on the battery or original charger. If it reads “Output 42V” the pack is 36V. If it reads “54.6V” the pack is 48V. When in doubt, count the “S” in the spec (10S = 36V, 13S = 48V).
Matching Chargers in Stock
We manufacture the full range with XLR, GX16, Rosenberger, Bosch and DC-barrel connectors:
- 120W E-Bike/E-Scooter Charger 7V-74V Lead Acid/Li-ion/LiFePO4 OEM
- 300W Smart Battery Charger 11V-77V Lead Acid/Li-ion/LiFePO4 CE/RoHS
- 450W Smart Battery Charger 11V-61V Lead Acid/Li-ion/LiFePO4 CE/RoHS
- 500W Smart Battery Charger 11V-77V Lead Acid/Li-ion/LiFePO4 CE/RoHS
- 600W Smart Battery Charger 11V-77V Lead Acid/Li-ion/LiFePO4 CE/RoHS
- 840W Industrial Battery Charger 11V-77V Lead Acid/Li-ion/LiFePO4 OEM/ODM
Never Mix Voltages
A 54.6V charger on a 36V pack can overcharge and is unsafe. If you operate mixed fleets, label chargers clearly or use our colour-coded connectors.
Frequently Asked Questions
Can a 42V charger charge a 48V battery?
No. A 48V (13S) pack needs 54.6V to reach full. A 42V charger will stop early and the battery will appear “not full” or may not charge at all.
What happens if I use the wrong voltage charger?
If the voltage is too low it won’t fully charge; if too high it can overcharge, swell or damage cells and is a fire risk. Always match nominal→charger voltage.
Is 52V the same as 48V?
No. A 52V (14S) pack charges at 58.8V, not 54.6V. Use the correct 58.8V charger for 52V batteries.
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Contact Juxon Power for wholesale pricing (save 40–60% vs. retail), custom OEM/ODM solutions, and fast worldwide shipping. Request a quote →
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