USB Fast Charge AA Lithium Battery 1665mWh 1.5V Constant Voltage High Drain Rechargeable

Standard disposable batteries lose voltage as they run down, causing lights to dim, motors to slow, and cameras to shut off prematurely. This USB fast charge lithium battery solves that by maintaining a steady 1.5V constant voltage output throughout its discharge cycle, so your devices run at full power right up until the battery is empty. The polymer cobalt lithium chemistry delivers 1665mWh capacity in a compact AA size, making it a practical alternative to one-time-use cells for high-drain electronics. It recharges fully in under 90 minutes through any standard USB 5V/500mA port, saving you time and reducing waste.

Features and Construction

This CES brand U501 battery is engineered for reliability and safety in everyday use. Its polymer cobalt lithium composition supports up to 1000 recharge cycles, and the integrated protection circuitry guards against common electrical hazards.

Material and Build

The battery uses polymer cobalt lithium chemistry, which provides stable energy delivery in a standard AA (R6/5/14500) form factor. The silver green outer casing makes it easy to distinguish from disposable alkaline cells at a glance. Model U501 is designed to fit standard AA battery compartments without modification.

Size and Practical Fit

With standard AA dimensions, this battery directly replaces disposable AA cells in compatible devices. The 1665mWh capacity supplies ample power for high-drain gadgets such as digital cameras, handheld games, and portable fans. Its -20°C to 60°C operating range suits both cold outdoor use and warm indoor environments.

Uses and Placement

The constant voltage output makes this battery especially useful for equipment that requires consistent power to function correctly. It works well in both portable electronics and household devices.

Event or Professional Use

Photographers and videographers benefit from reliable, steady power for flashes and wireless triggers. Constant 1.5V output prevents unexpected shutdowns during shoots and keeps equipment responding consistently through battery life.

Everyday Home Use

Household items like remote controls, wall clocks, and LED candles run dependably, but the battery truly shines in higher-drain items such as motorised toys, electronic door locks, and bathroom scales. The USB charging eliminates the need for a separate charger unit.

Benefits and Buying Value

By replacing single-use alkaline cells with these rechargeable lithium batteries, you reduce waste and the repeated expense of disposables. The 1000-cycle lifespan provides long-term economic value, especially for devices used frequently.

Reuse and Low Maintenance

Each battery can be recharged approximately 1000 times, which adds up to years of service in low to medium drain devices. The built-in protection prevents overcharging and overheating, so you can leave them charging unattended with confidence.

Why Choose This Product

The key advantage is the steady 1.5V constant voltage output, which standard rechargeable NiMH batteries cannot maintain. With a fast 90-minute charge time and comprehensive safety protections, this pack offers a straightforward upgrade from disposables for high-drain equipment.