4 Volt 500mAh Sealed Lead Acid Rechargeable Batter
Specifications:
- Sealed Lead Acid (SLA) rechargeable battery with 4V 500mAh capacity.
- Maintenance-free design with a strong ABS body.
- Compact and lightweight, making it suitable for various applications.
- Low self-discharge rate (<5% per month at 25°C) for long-term storage.
170৳ Original price was: 170৳ .140৳ Current price is: 140৳ .
24 in stock
24 in stock
Payment Methods:
Description
🔋 4 Volt 500mAh Sealed Lead Acid (SLA) Rechargeable Battery
🔹 Product Overview
The 4V 500mAh Sealed Lead Acid (SLA) Rechargeable Battery is a compact and maintenance-free power source designed for low-voltage electronic devices and backup systems.
Built using sealed lead-acid technology, this battery is leak-proof, durable, and reliable for long-term use in small emergency lighting, toys, medical devices, and portable equipment.
🔹 Key Features
-
✅ Nominal Voltage: 4 Volt (4V)
-
✅ Capacity: 500mAh (0.5Ah)
-
✅ Sealed & maintenance-free design
-
✅ Leak-proof and spill-proof
-
✅ Rechargeable
-
✅ Compact and lightweight
-
✅ Stable output voltage
-
✅ Durable ABS outer casing
🔹 Technical Specifications
| Specification | Details |
|---|---|
| Battery Type | Sealed Lead Acid (SLA) |
| Nominal Voltage | 4V |
| Capacity | 500mAh |
| Charging Voltage | 4.8V – 5.0V (Typical) |
| Terminal Type | Pin/Tab Terminal (varies by model) |
| Design | Valve Regulated (VRLA) |
| Maintenance | Maintenance-Free |
🔹 Applications
-
🔦 Emergency Lights
-
🚨 Alarm Systems
-
🎮 Rechargeable Toys
-
🧪 Laboratory Devices
-
🏥 Medical Instruments
-
🔋 Small Backup Systems
🔹 Advantages
✔ Low cost
✔ Reliable performance
✔ Easy to recharge
✔ Good for standby applications
✔ Long service life (with proper charging)
🔹 Charging Guidelines ⚠
-
Use a 4V SLA compatible charger
-
Avoid overcharging
-
Do not deep discharge frequently
-
Store in cool, dry place
-
Recharge after every use
🔹 Safety Notes
-
Do not short circuit
-
Do not open the battery casing
-
Avoid exposure to fire or high temperature
-
Dispose according to battery recycling rules
Customer Reviews
Related Products
Piezo Element (Connected Wire) 35mm
In stock
20W 5V 5A SMPS Power Supply Module Universal AC Input
In stock
Soldering Iron 60W & Heating Element Coil
In stock
Banana Plug Connector (Black-Red Pair)
In stock
Breadboard Full Size Bare 830 Tie Points
In stock

Reviews
Clear filtersThere are no reviews yet.