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24V (Variable range 21V ~ 30V) 12.7Ah Lithium Ion Rechargeable Battery for e-Bike e-Scooter - BX2499B

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Regular Price: US$699.00
Sale Price: US$349.95
Condition: Brand New
Warranty: 1 Year Warranty

Stock Status:In Stock

Availability:: Usually Ships in 24 to 48 Hours
Product Code: BAT-BX2499B

Battery Options*:
Bike Mount Output Box
Flat Output Box

24V 322Wh ( 12.8Ah @ 25.2V) Light Weight Lithium Ion Battery for electric bicycles and other devices that require 24V high power up to 300W. Made with high quality Panasonic Lithium Ion cells.

14-Level LED indicator
215A Fuse
3Power on/off
5Battery contact socket
6Charging input jack

Output Voltage: 20V ~ 29.75V
, Nominal Voltage: 25.2 V;
Maximum Continuous Output Current: 13A (Output Power: 250W ~ 300W);
Maximum Burst Output Power ( up to 10 minutes) Current: 15A (Output Power: 300W~350W)

You may choose battery with a flat connection box like this:

Or choose battery with a bike mounting connection box with key lock like this:

Battery Output Voltage:
This battery output voltage range is 21-29.5V. Nominal output voltage 25.2V. When the battery is fully charged, its output voltage is 29.5V. The output voltage will drop gradually during the discharge process and the final cut off voltage is 21V:

Note: this battery maximum output is 300W. It is recommend to use with devices that need 300W or less power. If your bicycles or scooters require more than 300W power, do not use this battery.


Safety Equipment
  • Water-resistant and firm ABS plastic casing.
  • Built-in PCB protection.
  • Prevent short circuit, over-current, over-heat, over-charge, over-discharge.
  • The internal pack is stabilized by braces, thereby avoiding mechanical accidents caused by vibration.

Model No.
  • BX24H99B

  • Lithium-ion
  • Nominal Voltage: 25.2 V
  • Minimum Voltage: 20.5V
  • Maximum Voltage: 29.75V
  • 12.72Ah @ 25.2V
  • 320 Watt-hour
  • 7S4P
Inner Resistance
  • ≤75 mΩ
Charge Voltage Limit
  • 29.75 V
Max. Charge Current
  • 3 A
Continuous Discharge Current
  • 15 A
Burst Discharge Current
(up to 10 minutes)
  • 18 A
  • 175.00 x 110.00 x 75.00 mm
  • ( or 6.8" x 4.3" X 3")
  • 1.86 kg ( or 4.1 pound)
Operate Temp. Charge
  • 0~45 ℃
Operate Temp. Discharge
  • -20~60 ℃
Storage Temp.
  • -20~40 ℃
Cycle Life
  • 500 Times
PCB Safety Function
  • Cell balancing
  • Over-discharge
  • Over-current protection
  • Over-charge
  • Temperature protection
  • Secondary protection

Small Size and Light Weight:

This battery only weighs around 3.8 pounds (same capacity Lead-Acid battery will be around 16 pounds).

Using a lithium-ion battery offers many advantages over older SLA (Sealed Lead Acid) batteries because of lithium-ion's high energy density, small size, and low weight. A typical lithium-ion battery has 1/4 of the weight and is 1/2 of the size of a same capacity traditional heavy bulky Sealed Lead Acid battery.

Package Contents:

The battery comes with an AC charger and output box. The AC charger can charge the battery from any 100-240V AC power source.

1. Battery with Flat Connection Box:

The output box can slide into the battery contact socket. Its output cable has 2 wires: red wire is +24V, black wire is ground.

2. Battery Bike Mount Output Connection Box:

If you are using this battery for a e-bike, you may select this output box. This output box comes with a lock for mounting on a bike or other devices.

Output Box (Model # KF542B)
Size: 95.00 x 89.00 x 59.00 mm (3.7" x 3.5" x 2.3")

The output box is lockable: if locked, it can not be removed from the battery. If unlocked, it can slide on/off the battery contact socket easily.

LED Display:

Safety Features:
  • Water-resistant and firm ABS plastic casing.
  • Built-in PCB protection.
  • Prevent short circuit, over-current, over-heat, over-charge, over-discharge.
  • The internal pack is stabilized by braces, thereby avoiding mechanical accidents caused by vibration.

The Four-level LED indicates current power status.

Battery can be recharged either by fastening on the bike or with the provided AC adapter.

The LED (at the power button controls on/off of the battery) glows when power is on.

The key lock is used to fix the battery onto the holder.

Battery can be installed easily. Simply slide the battery towards the holder by following the track

The Output Box KF542 is designed for multi-direction installation. User can change the position of battery (vertically / horizontally) by adjusting the clamp.

Output Box (Model# KF542)
Model No.:KF542B.150
  • Size: 95.00 x 89.00 x 102.00 mm
  • Wire Length: 1500 mm

One Year limited warranty. The one year limited warranty covers manufacturing and quality defects only. Please note that batteries wear out with use. The amount of charge a battery can hold gradually decreases due to usage and aging, and this issue is not covered by warranty.

This battery is for professional users with advanced electric knowledge only. We are not responsible for any damages or losses caused by using the battery pack.

Please read Battery Safety Information & Guidelines and our Terms & Policies before ordering this battery.

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Sale Price: US$14.95

Flat Top Cover for  Battery Output Connection Box

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