---
product_id: 605901287
title: "ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications"
brand: "eci power"
price: "€ 265.75"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/605901287-eci-power-12v-20ah-lithium-lifepo4-deep-cycle-rechargeable-battery
store_origin: GR
region: Greece
---

# 2000-5000 cycles 20Ah capacity Built-in BMS ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications

**Brand:** eci power
**Price:** € 265.75
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Your Passion with ECI!

## Quick Answers

- **What is this?** ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications by eci power
- **How much does it cost?** € 265.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/605901287-eci-power-12v-20ah-lithium-lifepo4-deep-cycle-rechargeable-battery)

## Best For

- eci power enthusiasts

## Why This Product

- Trusted eci power brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Equipped with a built-in BMS for ultimate protection against overcharging, overheating, and more.
- • **Long-Lasting Energy:** Experience up to 7000 cycles at 50% DOD, ensuring your power needs are met for years to come.
- • **Economical Excellence:** Get premium performance without breaking the bank—perfect for budget-conscious innovators.
- • **Versatile Connectivity:** Easily expand your power system with up to 4 batteries in series or parallel configurations.
- • **Power Up Your Adventures:** Unleash the potential of your RV, solar, or marine projects with this high-performance battery.

## Overview

The ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery is engineered for modern energy applications, offering a remarkable lifespan of 2000-5000 cycles, a built-in Battery Management System for safety, and compatibility with various setups including RVs, solar systems, and off-grid solutions. With a lightweight design and robust performance, this battery is the economical choice for energy enthusiasts.

## Description

ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications

## Features

- ECI Power: A brand for everyone with the goal of providing an open avenue for all to know that safe lithium power should not be cost-prohibitive nor outside the scope of your project.
- Unmatched Technology: The ECI Power LiFePO4 battery is designed to meet the needs of modern energy applications while exceeding performance comparable to even the most expensive batteries on the market. Also supports expansion up to 4 batteries sequenced in either series at 48V 20Ah, or in parallel at 12V 80Ah.
- Proven Quality: The battery utilizes UL1642 listed LiFePO4 Grade-A cells and is backed by our industry-leading engineering and after-sale teams covering North America and beyond since 1987.
- Economical: At a phenomenal price point, the battery is rigorously lab-tested and guaranteed to meet a minimum 3500 cycles at 80% DOD, providing high-performance longevity with a maximum of 7000 cycles at 50% DOD.
- Complete Protection: The lithium battery’s unique built-in Battery Management System (BMS) protects it from overcharge, deep discharge, overloading, overheating and short circuit, and excessive low self-discharge rate ensuring up to 1 year maintenance-free storage. Built-in low-temp cut off prevents charging under 23 °F (-5 °C).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ExpertPower |
| Brand | ECI Power |
| Model | lifepo4 |
| Product Dimensions | 18.03 x 7.62 x 16.76 cm; 2.29 kg |
| Batteries | 1 12V batteries required. |
| Item model number | ECI1220 |
| Manufacturer Part Number | ECI1220 |
| Amperage | 20 Amps |
| Voltage | 12 Volts |
| Item Weight | 2.29 Kilograms |

## Product Details

- **Brand:** ECI Power
- **Vehicle service type:** Trailer
- **Size:** 20 AH
- **Voltage:** 12 Volts
- **Battery cell composition:** Lithium Ion

## Images

![ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications - Image 1](https://m.media-amazon.com/images/I/61-38AmE+uL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will the bms allow for 3 batteries connected in series to get 36v without cutting out?**
A: No, the battery is limited to 2 in series

562-630-3002
support@expertpower.us

**Q: What is the best way to cover and protect the terminals?**
A: There are no terminals in the traditional sense.  They are threaded inserts that are lower than the level of the battery top.  The only exposed part is the screw heads that fasten your cable connectors to the battery.  If you put the battery in some kind of battery box, there should be no issues.

**Q: Can this be used as a replacement for the 12 volt battery (for starting and accessories) on a first generation nissan leaf?**
A: Yes it can, it only takes 185 watts of power to switch on the main pack and it take over the 12v bus. There are decades of documentation of many people using LiFePO4 12v 20ah batteries to do this on many generations of Leaf. This battery is rated nominal for 256 watts, so it can handle it. The only issue is the wiring adaption, you'll need someone knowledgeable to do it correctly. If you live in an extreme cold area, you might not want to do this though, that's the caution.

**Q: How can i tell when my eci power 5ah is charged?  the charger i bought doesn't ever get to the fully charged status light. will batt voltage indicate?**
A: This is a common issue with a Lithium Foe charger unless it was specifically designed for that battery with an indicator. There it would be best to charge it only when supervised and take reading with a volt meter. Typically they read 14.7 fully charged otherwise one can purchased their designed charger at a much higher expense.

## Frequently Bought Together

- ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications
- ExpertPower 12.8V 5A Smart Charger for Lithium LiFePO4 Deep Cycle Rechargeable Batteries

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-31*