Hailong G70 E-Bike Battery – 48V/52V | Samsung & LG 18650/21700 Cells | Smart Bluetooth BMS
The Hailong G70 is the best-selling downtube battery pack for a reason — it fits the widest range of e-bike frames, delivers reliable power, and now comes with smart Bluetooth connectivity for real-time monitoring on your phone.
Key Features:
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Flexible Cell Options — Built with your choice of premium Samsung or LG cells in either 18650 or 21700 format. Go with 18650 for proven reliability and value, or step up to 21700 for higher energy density and longer runtime in the same footprint.
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Smart Bluetooth BMS — Pair with your smartphone to monitor battery voltage, current, temperature, state of charge, and cell balance in real time. Get alerts before problems happen, and track your battery's health over its entire lifespan.
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Universal Hailong G70 Fit — The industry-standard G70 casing mounts cleanly to most downtube configurations, making it a direct replacement or upgrade for countless commuter, cargo, and DIY builds.
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Multiple Voltage & Capacity Configurations — Available in 36V, 48V, and 52V, with capacities from 15Ah to 35Ah to match your range and performance needs. Popular builds include 48V 15Ah for daily commuting and 48V 20Ah / 52V 20Ah for long-distance and high-torque setups.
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Safety Certified — Manufactured to meet UL 2849 / UL 2271 standards, with advanced protection against overcharge, over-discharge, overcurrent, short circuit, and thermal runaway.
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Durable & Weather-Resistant — Sealed casing and robust construction handle daily commuting, light rain, and rough roads without missing a beat.
Who It's For: Commuters who want dependable range, cargo and delivery riders who need serious capacity, and DIY builders looking for a proven, upgradeable pack with smart monitoring.
Customizable: Voltage, capacity, cell brand, and Bluetooth options can all be tailored to your specifications. OEM and wholesale inquiries welcome.
