Marui's Li-Po battery range may be more expensive than other batteries, but they are highly safe with built-in protection functions and temperature sensors.
It is resistant to cold and has low self discharge.
The circuit inside the battery manages the two cells connected in series. It monitors the voltage applied to each cell and charges the cells that are deteriorating appropriately, preventing further deterioration when connected to an airsoft rifle.
The battery is equipped with protection functions to protect the battery and the user from problems such as overcharging, over-discharging, and short circuits. [1] Over-discharge prevention function [2] Overcharge prevention function [3] Discharge overcurrent protection function [4] Short circuit protection function [5] 0V (zero volt) charging prohibition function.
The battery is protected from external shocks by a flame-retardant PVC hard case, preventing damage to the battery that could cause smoke, explosion, or fire.
1500mAh rating for extra long lasting power.
The status of standby, charging, or storage mode can be identified by the indicator lighting up/flashing and beeping. If an abnormality is detected, the indicator will flash in a different pattern and the buzzer will sound to let you know what is occurring.
As this is a Japanese product, it has a Japanese power plug. 100V-240V input range, requires the use of a travel adapter to use in Ireland/UK.
[MS•Li-Po Battery]
■ Equipped with five protection functions using a dedicated IC
■ Equipped with a temperature sensor (temperature determination is made by the airsoft gun or charger)
■ Cell management by internal circuitry (balance charging not required *1)

[MS•Li-Po Safety Charger]
■ Equipped with six protection functions to deal with various abnormal conditions
■ Equipped with a storage mode
■ Equipped with a buzzer function to notify of abnormal conditions and when charging is complete
■ Fanless design for excellent quietness
Cell size: 98mm x 29mm x 16.5mm size.
Requires the use of Marui's proprietary Li-Po charger (Included). You cannot plug this battery into a standard Li-Po charger.
Configuration: Stick.
Voltage: 7.4V, 35C.
Capacity: 1500mAh.

Li-Po/Li-Fe battery warning: Always charge your Li-Po/Li-Fe battery in a fireproof bag. Charge your Li-Po/Li-Fe battery on a hard, solid surface and away from other electronic devices. Only use a Li-Po/Li-Fe battery charger and never leave a battery unattended, even in another room.

January 2026

Tokyo Marui Safety Charger & 7.4V 35C 1500mAh MS Li-Po Battery Set