HL Hailong Down Tube Electric Bike Lithium Battery
Upgrade your e-bike with our HL Hailong downtube lithium battery, a perfect replacement for most electric mountain bikes and commuter e-bikes. Multiple voltage and capacity options are available to match your motor power demands.
8-Way Smart BMS Full Safety Protection
Every battery is equipped with an integrated intelligent BMS board to fully protect your battery pack:
Overcurrent, Overvoltage, Overpower, Overdischarge, Overheat, Short Circuit, Overcharge & Cell Balancing protection. Safe to use in temperature from -20℃ to 65℃.

Humanized Built-in Functions
- Anti-theft Safe Lock: Comes with dual keys to lock battery firmly on the frame, anti-theft when parking outside.
- XLR Charging Port: Stable charging interface for daily fast charging.
- LED Power Level Indicator: Press the button to check remaining power (100%/75%/50%/25%) at a glance.
- Power On/Off Switch: Cut off power instantly when not in use to save battery loss.


Stable 5-Pin Mount Base
Standard 5-pin metal conductive contact mounting base delivers stable power transmission. Exact dimension drawings provided for you to check frame compatibility before purchase. Easy slide-in & lock installation without complex tools.


Complete Package List
Each set includes lithium battery, matched charger, anti-theft keys and metal mounting base, all ready for direct installation on your e-bike. Ideal replacement battery for daily commuting, off-road mountain cycling and short-distance travel.



















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