Rechargeable Spare Lithium Battery 4000mAh Li-ion 12.6V Input 10.8-12.6V Output Blue 9.5x5.5x2cm for EU UK US Devices Power Backup Replacement Cell
Rechargeable Spare Lithium Battery 4000mAh Li-ion Compact Blue Power Backup

This rechargeable spare lithium battery delivers a practical solution for keeping your devices powered when mains electricity is unavailable. With a substantial 4000mAh capacity, it provides extended runtime for compatible electronics, making it ideal for travel, work, or emergency use. The Li-ion chemistry ensures efficient energy storage and stable output throughout its discharge cycle. Measuring just 9.5 by 5.5 by 2 centimetres, this battery is compact enough to slip into a laptop bag, camera case, or carry-on luggage without adding bulk. The blue casing makes it easy to identify among other accessories. Available with EU, UK, or US plug style options, it adapts to different regional power sockets, offering flexibility for international use.
Features and Construction

This battery is built around reliable lithium-ion cell technology, chosen for its rechargeability and consistent voltage output. The specifications are straightforward and practical, covering the key details a buyer needs before purchase.
Material and Build
The battery uses Li-ion cells, a common chemistry for rechargeable power solutions that balance energy density with stable discharge. The exterior housing is a durable blue plastic casing that protects the internal cells during normal handling. The compact design keeps weight low while maintaining the specified capacity.
Size and Practical Fit
At 9.5 by 5.5 by 2 centimetres, this battery is sized for portability. It fits into most standard battery compartments or can be carried separately as a spare. The package dimensions are 10 by 19 by 3 centimetres, indicating the retail packaging size.
Uses and Placement

This battery serves as a direct replacement or spare power source for compatible devices that accept its voltage range and connector type. Its versatility extends across different settings.
Event or Professional Use
Photographers, videographers, and field workers can use this battery as a backup power source for cameras, monitors, or portable equipment that runs on 10.8-12.6V DC. The 4000mAh capacity supports longer shooting sessions or fieldwork without searching for a mains outlet.
Everyday Home Use
At home, this battery can power small electronics, LED lighting, or hobby projects that require a stable DC supply within its voltage range. Keep it charged and ready for power cuts or when you need to move devices away from wall sockets.
Benefits and Buying Value

Choosing a rechargeable lithium battery offers practical advantages over single-use alternatives. This model combines useful capacity with a compact form factor.
Reuse and Low Maintenance
Being rechargeable, this battery can be used hundreds of times with proper care, reducing waste and the need for frequent replacements. Li-ion cells hold their charge well when not in use, so the battery is ready when needed.
Why Choose This Product
This battery provides a straightforward power backup solution with a clear set of specifications: 4000mAh capacity, 12.6V input, and 10.8-12.6V output. The choice of EU, UK, or US plug style means you can match it to your local power sockets. The blue colour and compact size make it easy to store and identify.

