400Ah 12V LiFePO4 Off-Grid Battery Kit 5.12kWh Deep Cycle for RVs and Off-Grid Use

Product Overview

The ALPHA 2 LITE is a 12V 400Ah lithium battery built with premium LiFePO4 cells for maximum energy efficiency and long-term reliability. Designed for extended energy storage, this battery delivers predictable power for off-grid setups, RVs, vans, and backup energy systems. Its robust construction, high capacity, and low-maintenance design make it a dependable solution for critical energy needs.

With 400Ah capacity and stable voltage output, the ALPHA 2 LITE is suitable for high-demand scenarios. The battery combines durability, safety, and efficiency into a compact package, supporting confidence and clarity in energy planning.

Why This Product Makes Sense

Reliable energy storage depends on quality, consistency, and well-managed safety features. The ALPHA 2 LITE provides all three through premium LiFePO4 cells with a long cycle life of over 4,000 cycles. This ensures that stored energy remains available over many years without degradation or unpredictable performance.

With a 12V 400Ah capacity, the ALPHA 2 LITE balances energy output with physical size. The Group 24 form factor allows easy integration into existing setups while supporting significant energy storage. This helps buyers plan accurately and avoid surprises when connecting to RV systems, off-grid applications, or battery banks.

The battery’s built-in BMS adds multiple layers of protection, including individual cell fuses, overcharge and over-discharge safeguards, short circuit protection, and temperature-based disconnects. Each layer supports continuous operation and protects the battery from conditions that could reduce reliability in lower-quality options.

Temperature tolerance ranges from -4℉ to 140℉ for discharge and 32℉ to 131℉ for charging, with defined storage conditions up to 113℉. This allows the battery to operate safely across varied climates, providing confidence in diverse environments without overcomplication.

With removable carry handles and thoughtful design, the ALPHA 2 LITE is easy to transport and handle despite its high capacity. Choosing this battery provides a reliable foundation for energy systems, combining predictable performance, safety, and long-term value.

What To Expect From It

In everyday use, the ALPHA 2 LITE delivers a stable 12.8V output and 400Ah capacity, totaling 2560Wh per battery. Its low self-discharge rate of less than 5% per month ensures that energy remains available even after periods of inactivity.

The BMS monitors each cell individually, allowing the battery to continue functioning even if one cell experiences a fault. It also protects against overcharge, over-discharge, overcurrent, and short circuits while maintaining stable voltage output. High and low temperature disconnects further safeguard the system under varying environmental conditions.

Owners can expect straightforward handling with removable carry handles and compact dimensions. The ALPHA 2 LITE supports high amp loads safely, providing confidence that connected devices receive consistent energy. Maintenance is minimal, with the LiFePO4 chemistry designed for longevity and dependable performance.

When used as a 400Ah 12V battery bank with two units and included 2 AWG cables, the system offers modular, predictable energy storage. Each battery performs consistently, and the included cables simplify connections for a cohesive, ready-to-use bank.

Technical Specifications

• Nominal Voltage: 12.8V
• Nominal Capacity: 400Ah
• Minimum Capacity: 199Ah
• Cycle Life: >4000 cycles
• Energy: 2560Wh
• Charge Voltage: 14.4V
• Continuous Discharge Current: 400A
• Self Discharge: <5%/month
• Charge Temperature: 32℉ to 131℉ (0℃ to 55℃)
• Discharge Temperature: -4℉ to 140℉ (-20℃ to 60℃)
• Storage Temperature: 14℉ to 113℉ / -10℃ to 45℃, 90% RH Max
• Battery Dimensions (LxWxH): 20.9 x 8.1 x 8.5 in
• Weight: 52.9 lb

What’s Included

• 2 x 12V 400Ah LiFePO4 batteries
• 2 x 1 ft 2 AWG battery cables

BMS Operation

• Every LiFePO4 cell individually fused to prevent damage to other cells
• Overcharge protection: detection voltage 3.75V ±0.03V, recovery voltage 3.55V (3.40–3.60V)
• Over-discharge protection: detection voltage 2.20V ±0.08V, recovery voltage 2.70V ±0.10V
• Short circuit protection
• High & low temperature disconnects
• Convenient removable carry handle

Warranty

The ALPHA 2 LITE is backed by a 5-year warranty, providing confidence in long-term performance and reliability for your energy storage needs.