• A product infographic for a Varstrom 48V 13Ah downtube battery, showing the battery from multiple angles with dimensions, close-up connector details, technical specifications in a table, and a small installed example on a bicycle.
  • A 52V 25AH ebike battery pack shown open with multiple blue cylindrical battery cells inside a black protective frame. The image includes marketing callouts such as Grade A Cells, Battery Cells Fixing Frame, 40A Smart BMS, and protection features like overcurrent, overvoltage, and temperature protection.
  • Varstrom 48V 20Ah e-bike battery kit with a black battery pack, battery cells, and a smart BMS controller, presented on a blue and white infographic background with feature callouts.
  • Promotional collage for an IP67 waterproof e-bike battery, featuring a purple step-through e-bike in a rainy cobblestone street, a black recumbent e-bike with a man riding it, and a purple mountain e-bike on a rocky path. Text at the top reads 'IP67 WATERPROOF E-BIKE BATTERY'.
  • A four-panel promotional collage showing a person riding an electric tricycle in different settings: mountain trail, city street, beach, and dirt road. Large blue text at the top reads, 'Reliable Power Every Mile' with smaller supporting copy about built performance and continuous riding.
  • A product information graphic for a Varstrom bicycle battery. The main subject is the black Varstrom battery shown with dimension callouts and close-up inset views of the terminal openings.
  • Promotional comparison graphic for premium A+ grade battery cells. Left side shows a single blue-and-black battery cell on a purple gradient background with text about factory-fresh high-cycle cells.
  • A large product comparison chart showing multiple battery models and capacities for different vehicle voltages (48V 13AH, 48V 16AH, 48V 20AH, 48V 25AH, 48V 30AH, 48V 18.2AH).
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Charge My E-Bike

Varstrom High-Output E-Bike Battery Pack

Varstrom High-Output E-Bike Battery Pack

$407.00 USD
$257.96 USD $407.00 USD
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Varstrom High-Output E-Bike Battery Pack (48V / 52V | Down-Tube & Rear Rack | Samsung/LG 21700 & Grade-A 18650 Cells | UN38.3 & UL Certified)

Power your DIY conversion or factory mid-drive upgrade with the Varstrom Premium High-Output Lithium-Ion E-Bike Battery System. Engineered for maximum energy density and consistent power delivery, Varstrom batteries feature top-tier Samsung 21700, LG 21700, and Grade-A 18650 cells. Specifically optimized with heavy-duty internal BMS protection and standard XT60 output connectors, these packs seamlessly drive 250W to 1500W+ motor systems—including the popular Bafang BBS02, BBSHD, and Tongsheng TSDZ torque-sensing mid-drives. Fully UL and UN38.3 safety-certified, every battery is backed by a full 1-Year Manufacturer Warranty.

⚠️ Key Performance & Safety Guidelines

IMPORTANT VEHICLE & BATTERY SPECIFICATIONS:

  • UN38.3 & UL Safety Certified: Fully certified to meet strict North American and international standards for electrical transport safety, short-circuit protection, and thermal runaway prevention.

  • Optimized Mid-Drive & Hub Motor Compatibility: Built with a high-current discharge BMS designed for Bafang BBS02 ($750\text{W}$), BBSHD ($1000\text{W}+$), and Tongsheng TSDZ torque-sensor mid-drives, as well as 250W–1500W hub motors.

  • Next-Gen 21700 Cell Architecture Options: Premium configurations feature high-capacity Samsung 21700 (5000mAh) or LG 21700 (4800/5000mAh) cells for minimal voltage sag under heavy acceleration.

  • Standard XT60 Output Plug: Heavy-duty, gold-plated XT60 main power connector ensures low resistance and high heat tolerance during sustained high-amp draws.

🚀 Key High-Performance Features

  • Multiple Down-Tube & Rear-Rack Form Factors: Choose between classic Hailong/Yingwu down-tube styles or integrated rear rack options to suit your frame geometry.

  • Up to 52V 25Ah Capacity Tiers: High-voltage 52V options deliver higher top-end RPMs, cooler operating temperatures, and up to $1,300\text{Wh}$ of energy storage for long rides.

  • Integrated Safety Key-Lock System: Mechanical frame lock anchors the battery to its quick-release mounting bracket to mitigate theft and keep it securely locked during off-road riding.

  • Integrated LED Charge Gauge: Convenient touch-activated LED power status gauge informs you of remaining battery capacity at a glance.

  • 1-Year Warranty & CE Certification: Complete peace of mind with 12 months of direct factory warranty coverage.

📊 Technical Specifications & Cell Configuration Matrix

Battery Variant Tier Cell Type & Chemistry Capacity & Energy System Voltage Compatible Motors
48V 13AH Down-Tube Grade-A 2600mAh 18650 Cells $13\text{Ah}$ ($624\text{Wh}$) $48\text{V}$ Nominal $250\text{W} - 750\text{W}$
48V 16AH Down-Tube Grade-A 3200mAh 18650 Cells $16\text{Ah}$ ($768\text{Wh}$) $48\text{V}$ Nominal $250\text{W} - 750\text{W}$
48V 18.2AH Rear Rack Grade-A 2600mAh 18650 Cells $18.2\text{Ah}$ ($873\text{Wh}$) $48\text{V}$ Nominal $250\text{W} - 1000\text{W}$
48V 20AH HY Down-Tube LG 21700M 4800mAh Cells $20\text{Ah}$ ($960\text{Wh}$) $48\text{V}$ Nominal $250\text{W} - 1000\text{W}$
48V 25AH Down-Tube Grade-A 5000mAh 21700 Cells $25\text{Ah}$ ($1,200\text{Wh}$) $48\text{V}$ Nominal $250\text{W} - 1500\text{W}$
52V 20AH Down-Tube Samsung 5000mAh 21700 Cells $20\text{Ah}$ ($1,040\text{Wh}$) $52\text{V}$ High-Output $500\text{W} - 1500\text{W}+$
52V 25AH Down-Tube LG 5000mAh 21700 Cells $25\text{Ah}$ ($1,300\text{Wh}$) $52\text{V}$ High-Output $500\text{W} - 1500\text{W}+$
$500\text{W} - 1500\text{W}+$

📋 Ideal Applications

  • Bafang & Tongsheng Mid-Drive Upgrades: High-amp BMS and XT60 connector make this a plug-and-play energy source for Bafang BBS02, BBSHD, and Tongsheng TSDZ2 setups.

  • DIY Custom E-Bike Builds: Sleek down-tube casing mounts directly to standard frame water bottle cage braze-ons.

  • Extreme Long-Distance Commuting: 52V 20Ah and 25Ah options eliminate range anxiety on multi-city commutes and backcountry trails.

📦 Package Contents

  • 1 x Varstrom Lithium-Ion E-Bike Battery Pack (Configuration selected above)

  • 1 x Quick-Release Down-Tube Mounting Base Cradle (with XT60 Pigtail)

  • 2 x Frame Security & Locking Keys

  • 1 x User Safety & Care Manual

Power your Bafang or custom e-bike with certified Samsung and LG batteries

Varstrom E-Bike Battery – Power You Can Trust

Voltage Matching Made Simple


48V Battery → Works with 48V Motors

52V Battery → Works with 52V Motors

Match your battery voltage to your motor voltage for optimal performance and longevity.


Certified Safe & Globally Compliant

CE Certified • UL Certified • UN38.3 Certified – every battery meets strict international safety standards for lithium-ion transport and usage.

100% Quality-Assured

Each battery undergoes rigorous inspection for flawless function and appearance before shipping. No exceptions.

Wide Range of Sizes & Voltages

Available in 48V and 52V configurations, with capacities ranging from 13Ah to 30Ah. Choose the perfect power level for your ride.

Power for Every Build

30A BMS: Ideal for 250W–1200W motors

40A BMS: Supports up to 2000W (available on 25Ah & 30Ah models)

XT60 Female Connector

Equipped with a standard XT60 Female connector for broad compatibility with most motor controllers—plug in and ride with confidence.

Built-In Security & Convenience

Lock & Key Anti-Theft System – secure your battery to the frame

Built-In Charge Level Indicator – check remaining power at a glance

Advanced BMS Protection

Comprehensive battery management system guards against overcharge, over-discharge, short-circuit, and overcurrent—protecting your investment ride after ride.

Long-Lasting Performance

Engineered for 1000+ charge cycles, delivering reliable power for years of riding.

What’s in the Box

1× Battery

1× Mounting Plate

1× Charger (included free)

1× Extra Key

Ride farther. Ride safer. Ride Varstrom.




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