Ebike Battery 36V 7.8Ah Lithium Pack - Reliable Range for 100-750W

In this review the focus is on the Ebike Battery 36V 7.8Ah Lithium Pack by Qlaway, a compact replacement battery for electric bikes, scooters and small motorcycles. The bottom line: this pack is aimed at riders who need a lightweight, easy-to-install battery with a built-in 20A BMS and enough capacity to support 100W to 750W motors without frequent replacement. It stands out for the claimed 2000+ recharge cycles and convenient connector options, making it a practical upgrade for commuters and hobby riders who want steady, dependable power in a small package.

Key Features

• 36V 7.8Ah capacity: Provides a balance of weight and usable range that suits short daily commutes and moderate leisure rides without adding bulk.
• 20A BMS protection: The built-in battery management system guards against short circuits, overcharge and overdischarge to extend cycle life and improve safety.
• Compact dimensions: At about 7.7 x 3.3 x 3.1 in the pack fits many battery bays where larger packs will not, making installation and storage easier.
• Multiple connector options: Includes a T plug and a T to XT60 female adapter so users can match common controller inputs without soldering or custom wiring.
• Waterproof sealing: Both ends are sealed with insulating glue to reduce moisture risk and improve durability in wet conditions.
• Long cycle life claim: Qlaway cites more than 2000 recharge cycles, which, if realized, makes this pack a cost-effective choice over time.

Who It's For

This battery is well suited for riders converting or upgrading electric bicycles, scooters, tricycles or small motorcycles that use a 36V system and a controller rated around 20A. It works with motor setups from roughly 100W up to 750W, so commuters, neighborhood riders and families with electric toy vehicles will find it useful.

It is less appropriate for long-distance touring or heavy-duty off-road use where larger capacity or higher continuous discharge is required, and buyers who need specific custom enclosures should check the 7.7 x 3.3 x 3.1 in dimensions carefully before ordering.

Pros & Cons

Pros

• Compact and relatively lightweight at about 4.13 lb, making installation straightforward on many frames.
• 20A BMS adds safety and helps achieve the brand's long cycle life claim.
• Includes a storage bag and both T plug and XT60 adapter for flexible connections out of the box.
• Sealed ends for improved water resistance compared with unprotected packs.

Cons

• Capacity is moderate; riders needing longer range will want a larger Ah pack for extended trips.
• Charging current listed at 2A means full recharge times will be relatively slow compared with higher-current chargers.

Specifications

Battery type	Lithium-ion
Voltage	36V
Capacity	7.8Ah (280.8Wh)
BMS	20A protective board
Dimensions	7.7 x 3.3 x 3.1 in
Weight	4.13 pounds
Charging	36V charging voltage, 2A charging current

Our Verdict

The Qlaway 36V 7.8Ah battery is a practical, economical choice for riders who need a compact replacement or upgrade for 36V/20A systems pairing with 100W to 750W motors. It delivers a sensible mix of safety features, connector options and claimed long cycle life, and represents good value for commuters and casual riders who prioritize size and reliability over maximum range.

Frequently Asked Questions

Will this battery fit my bike?
Check that your controller voltage is 36V, the controller rated current is around 20A, and the pack dimensions 7.7 x 3.3 x 3.1 in fit your battery compartment.

What connectors are included?
The pack ships with a T plug and a T to XT60 female adapter to match common motor controller inputs.

How long does it take to charge?
With the specified 2A charging current expect several hours for a full charge; this pack favors battery longevity over fast charging.