Rechargeable Battery Voltcraft HR03 Micro AAA NiMH 900 mAh 1.2 V – 1.2V NiMH micro cell

Rechargeable Voltcraft HR03 Micro AAA NiMH battery with 900 mAh capacity and 1.2 V nominal voltage is a compact energy cell designed for everyday portable electronics. The micro (AAA/HR03) format fits devices with limited space while NiMH chemistry offers multiple recharge cycles, stable voltage delivery under load and relatively low self-discharge compared with older rechargeable types. This cell is intended as a replaceable power source for small household and personal devices where reliable, repeatable performance is needed.

Advantages

The Voltcraft HR03 delivers consistent 1.2 V output and a usable 900 mAh capacity suitable for low- to moderate-drain devices. Rechargeable NiMH construction reduces long-term operating costs compared with single‑use batteries and supports many charge/discharge cycles. The micro AAA size provides wide compatibility with compact remotes, wireless peripherals and small lighting devices, while the chemistry maintains voltage under typical loads for stable device operation.

Suitable for

• Remote controls and keyless entry devices
• Wireless mice and keyboards
• Small flashlights, headlamps and keychain torches
• Toys, handheld game controllers and learning devices
• Portable audio devices, small medical devices and measurement tools

Key specifications

• Cell type: Nickel‑Metal Hydride (NiMH)
• Size: Micro / AAA (HR03)
• Nominal voltage: 1.2 V
• Rated capacity: 900 mAh
• Rechargeable: yes, multiple cycles
• Typical applications: low- to moderate-drain portable electronics

How to use

Insert the Voltcraft HR03 Micro AAA battery into the device following the polarity markings. Use a charger compatible with NiMH micro cells and follow the charger manufacturer’s instructions for charge current and time. Allow the battery to complete a full charge cycle before first use to reach optimal capacity. When removing or storing batteries, keep terminals protected and avoid short circuits.

Usage recommendations

For best lifetime and performance, charge with a dedicated NiMH charger that offers proper termination (delta-V, dT/dt or timed charge for low-rate chargers), avoid deep discharge when possible, and store batteries at moderate temperatures in a partially charged state if not used for extended periods.