12V 20Ah Lithium Battery

Description

The VTL12-20 12V 20Ah lithium (LiFePO₄) battery is a lightweight, high-performance power solution designed to deliver reliable energy for a wide range of applications. Built with advanced lithium iron phosphate technology, it offers significantly longer cycle life, faster charging, and consistent power output compared to traditional lead-acid batteries.

Compatible With / Replaces

The VTL12-20 replaces 12V 20Ah LiFePO4 batteries including:

• CLI18-12
• CLI20-12
• EWLI-12V20
• ML20-12LI

Key Features

• Integrated BMS – Advanced battery management system protects against overcharge, over-discharge, short circuit, and overheating.
• Long Cycle Life – 2,000+ cycles at 50% depth of discharge.
• High Energy Output – Delivers consistent power with improved efficiency over lead-acid batteries.
• Lightweight Design – Up to 50% lighter than equivalent lead-acid batteries.
• Wide Operating Temperature – Discharge temperature range of -20°C to 60°C (-4°F to 140°F).
• Maintenance-Free – No watering or equalizing required.

Common Applications

• Medical equipment
• Mobility equipment
• Fish finders
• Lawnmowers
• Electric vehicles
• Backup power systems

Specifications

• Nominal Voltage: 12.8V
• Capacity: 20Ah (256 Wh)
• Chemistry: LiFePO₄ (Lithium Iron Phosphate)
• Length: 181 mm (7.08″)
• Width: 78 mm (2.99″)
• Height: 165 mm (6.53″)
• Weight: 2.4 kg (5.3 lbs)
• Terminal Type: M6 Insert
• Data Sheet: VTL12-20 Data Sheet (PDF)
• Warranty: 3 Years

Frequently Asked Questions

What is a LiFePO₄ lithium battery?

A LiFePO₄ (Lithium Iron Phosphate) battery is a type of lithium battery known for high energy density, long cycle life, lightweight design and safe, stable chemistry. It’s ideal for electric vehicles, mobility equipment and backup power applications.

How does this battery compare to lead-acid batteries?

This 12V 20Ah LiFePO₄ battery delivers up to 2,000 cycles at 50% depth of discharge, is significantly lighter, and maintains higher voltage under load compared to traditional lead-acid or AGM batteries. It also requires no maintenance.

Can this battery replace my 12 Volt 20 Ah AGM battery?

This battery can be used as a replacement for many 12V 20Ah AGM or gel batteries. However, always ensure your device supports LiFePO₄ chemistry before replacing.

Can I connect combine multiple batteries together?

You can connect four VTL12‑20 batteries in series to create a 48V 20Ah battery bank, or connect up to four in parallel to create a 12V 80Ah bank. Always use batteries of the same model and state of charge, and make sure connections follow safe wiring practices and the battery’s built-in management system (BMS) limits to protect your batteries.

Do I need to install a special charger?

Yes, to maximize lifespan and performance, use a lithium-compatible charger or a multi-stage charger that supports LiFePO₄ chemistry.