This 72V 40Ah battery replaces the original battery of your Dualtron Ultra 2: same voltage, same connectors, same dimensions, to restore the range and performance of a brand new scooter. It is assembled in our workshop using name-brand 21700 cells (Samsung, LG, or Molicel depending on stock) and a BMS sized specifically for the machine.
When should you replace your Dualtron Ultra 2 battery?
Three unmistakable signs: a shrinking range (half of the original range or even less), voltage cuts or drops during acceleration or hill-climbing while the gauge still shows a charge, and a pack that heats up or becomes unbalanced (a cell fails, the BMS trips). A quality pack restores the scooter's original torque and top speed; on a machine that is a few years old, it is often the best money spent.
Specifications
- Nominal voltage: 72V
- Capacity: 40Ah, which is 2880 Wh
- Cells: Name-brand Li-ion 21700 (Samsung, LG, Molicel)
- BMS: Charge / discharge management, balancing, thermal protection
- Fast charging: Compatible with fast chargers
- Compatibility: Dualtron Ultra 2
Range or Performance?
This Range version focuses on capacity and lifespan, with a discharge current matched to the original controller. If you have upgraded your controller or are looking for sharper acceleration without power cuts, check out our Performance batteries (high-discharge cells, Bluetooth BMS) for the same model.
French manufacturing, 2-year warranty
All our batteries are assembled in our workshop in France, exclusively with name-brand cells (Samsung, LG, Molicel). Each pack is equipped with a BMS that manages charging, discharging, cell balancing, and thermal protection. The price includes the pack, power connectors, and charging connectors; the charger is sold separately. Delivery in mainland France, Corsica, and the European Union only (regulated lithium transport). 2-year warranty.
Frequently Asked Questions
Is the original charger suitable?
Yes, if its voltage matches (72V). On fast-charge compatible packs, a more powerful charger significantly reduces charging time; ask us for advice.
Is a break-in period required?
No. We simply recommend a few full cycles initially for the BMS to calibrate the balancing, and avoiding storing the pack at 100% or 0% for weeks.
Can I install it myself?
If you know how to open the deck and handle power connectors, yes: the battery arrives with its connectors ready. Otherwise, our workshop offers installation (installation package).
