Mitsu battery for Lenovo ThinkPad T420s

MITSU Laptop Battery - reliable power for your device

MITSU battery combines high-class technology, reliability, and outstanding quality. Thanks to its solid build quality, you can extend the warranty on the cells free of charge - a benefit appreciated by hundreds of thousands of users across many European countries.

Why choose a MITSU battery?

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  ✅ Class A Tianneng cells - guarantee long lifespan and stable performance


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  ✅ Real capacity - no artificially inflated specifications


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  ✅ Low self-discharge rate - longer readiness for use


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  ✅ No memory effect - you can charge at any time without losing performance


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  ✅ Full compatibility - perfect fit for your laptop

Protection that safeguards you and your device

The MITSU battery is equipped with an intelligent protection system that guards against:

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  overheating


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  overcharging and deep discharge


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  overvoltage


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  current overload


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  short circuit

This ensures your laptop is effectively protected from potential power-related hazards.

Warranty and support

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  24-month warranty - for the housing and electronics


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  12-month warranty - for the cells


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  Additional 6 months - free of charge after product registration (details in the Warranty Card)

Manufactured to standards

A hallmark of quality is the 6-stage quality control , ensuring reliability and safe operation. All MITSU batteries meet the requirements of CE and RoHS directives, and are manufactured in facilities certified according to the ISO 9001 standard.