CELLWATT™ 12V 4Ah Lithium Iron Battery Pack

Power your compact electronics with the next generation of energy: the CELLWATT™ 12V 4Ah Lithium Iron Battery Pack. Specially designed for spaces where size and weight matter most, this ultra-compact powerhouse is the perfect high-efficiency replacement for traditional, heavy 12V 4Ah–5Ah lead-acid (SLA) batteries. Enjoy significantly longer runtimes, faster charging speeds, and a lifespan that leaves old batteries in the dust.

Next-Gen Safety with a Built-in Smart BMS

Do not let the compact size fool you—this battery is packed with high-tech safety features. The CELLWATT™ 4Ah pack is equipped with an intelligent, integrated Battery Management System (BMS) that continuously monitors and protects the battery from the inside out. It offers instant, automatic protection against:

• Over-charging and deep, destructive over-discharging
• Short circuits and accidental polarity reversal
• Thermal overloads and overheating

By actively maintaining perfect balance between the internal cells, the smart BMS allows this pack to easily deliver 2,000+ full charge-discharge cycles. It will comfortably outlast standard lead-acid batteries by up to 10 times, giving you years of worry-free, maintenance-free performance.

Consistent Power Output & Ultra-Lightweight Build

Unlike older SLA batteries that suffer from voltage drops and sluggish performance as they empty, our premium Lithium Iron chemistry maintains a flat voltage curve. Your gear receives full, steady power right until the very last drop of capacity. Plus, it packs all this performance at less than half the weight of a standard lead-acid battery, making it incredibly easy to fit into tight enclosures or portable equipment.

Ideal Applications:

• Home UPS & Router Backups: Keep your Wi-Fi routers, modems, and small electronic devices powered through unexpected blackouts.
• Emergency Lighting: Perfect for emergency exit signs, LED lanterns, and portable searchlights.
• Security & Alarm Systems: Reliable standby power for home security panels, burglar alarms, and electronic gate openers.
• DIY Projects & Test Equipment: The ultimate stable power source for custom electronics, robotics, and portable field testing devices.

Key Technical Specifications

• Brand: CELLWATT™
• Nominal Voltage: 12V
• Rated Capacity: 4Ah
• Chemistry: Advanced Premium Lithium Iron
• Safety Feature: Built-in Smart BMS & Auto-Cell Balancing
• Cycle Life: 2,000+ Full Cycles (100% Depth of Discharge)
• Design: 100% Sealed, spill-proof, and completely maintenance-free