battery 4v-0.8A Chinese

Description

The 4V 0.8Ah battery is a compact, sealed lead-acid (SLA) rechargeable battery, widely manufactured in China for small electronic consumer goods. Because of its small size and low capacity, it is a staple for portable low-power devices.

Product Overview

This battery typically uses Valve-Regulated Lead-Acid (VRLA) technology with an Absorbent Glass Mat (AGM) separator. This design makes the battery “dry” and spill-proof, meaning it can operate in any orientation without leaking electrolyte.

Typical Specifications

• Nominal Voltage: 4V

• Nominal Capacity: 0.8Ah (often labeled as 800mAh)

• Typical Dimensions: Approximately 32mm x 22mm x 65mm (varies slightly by manufacturer)

• Weight: ~70g to 85g

• Design: Sealed, maintenance-free, and rechargeable.

Key Features

• Maintenance-Free: The sealed construction eliminates the need for water refilling.

• Safety: Incorporates a pressure-relief valve to prevent gas buildup.

• Stable Output: Provides a reliable, steady voltage discharge for small appliances.

• Low Self-Discharge: Suitable for applications that may sit idle for periods, though periodic recharging is necessary to maintain battery health.

Common Applications

These batteries are most frequently found in:

• Electric Mosquito Swatters: The most common consumer use for this specific voltage and capacity.

• Emergency/LED Flashlights: Rechargeable portable lamps.

• Small Table Lamps: Portable, rechargeable reading lights.

• DIY Electronic Projects: Prototyping small electronic circuits or low-power robotics.

• Signaling/Security: Low-power indicators or backup for small alarm components.

Usage & Maintenance Tips

Warning: These batteries are highly sensitive to overcharging. Always use a charger specifically designed for 4V lead-acid batteries to prevent overheating, swelling, or premature failure.

• Avoid Deep Discharge: Lead-acid batteries perform best if they are not drained completely. Try to recharge them before they reach a very low voltage state.

• Storage: If not using the device for a long time, store the battery in a cool, dry place and ensure it is fully charged before storage. Recharge it every few months if it remains in storage to prevent sulfation.

• Disposal: Like all lead-acid batteries, these contain lead and acid. They should never be thrown in household trash; please ensure they are disposed of at a proper battery recycling center.