12V Dry Battery: Complete Description
A 12V dry battery is a maintenance-free, sealed lead-acid (SLA) battery designed for deep-cycle applications in solar systems, UPS, and automotive use. Unlike flooded batteries, it uses gel or AGM (Absorbent Glass Mat) technology, making it leak-proof, vibration-resistant, and safe for indoor use.
Key Features
✔ Maintenance-Free – No water refilling needed
✔ Spill-Proof Design – Can be installed in any orientation
✔ Deep Discharge Recovery – Handles 50-70% depth of discharge (DoD)
✔ Long Lifespan – 3-5 years with proper care
✔ Fast Recharging – 30% quicker than flooded batteries
Technical Specifications
-
Voltage: 12V DC
-
Capacity: 7Ah to 200Ah (common range)
-
Chemistry: AGM/Gel (recombinant electrolyte)
-
Cycle Life: 500-800 cycles @ 50% DoD
-
Terminals: F1, F2, or bolt-type
Applications
🔋 Solar Energy Storage – For 12V off-grid systems
⚡ UPS/Inverters – Home/office backup power
🚗 Automotive – Caravans, boats, electric scooters
🛒 Medical Equipment – Wheelchairs, portable devices
Advantages Over Wet Batteries
✅ Safer – No acid leaks or fumes
✅ Compact – Higher energy density
✅ Low Self-Discharge – Loses only 3% charge/month
✅ Wider Temp Range (-15°C to 50°C operation)