---
product_id: 740172282
title: "12V 20Ah LiFePO4 Lithium Battery with Grade A+ Cells, 4000+ Deep Cycle Lithium Iron Phosphate Rechargeable Battery with 20A BMS for Fish Finder, Solar, Lighting, Alarm System"
brand: "dr.prepare"
price: "77555 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Dr.Prepare"
url: https://www.desertcart.hu/products/740172282-12v-20ah-lifepo4-lithium-battery-with-grade-a-cells-4000
store_origin: HU
region: Hungary
---

# 20A smart BMS protection 4000+ deep cycles 60% lighter than SLA 12V 20Ah LiFePO4 Lithium Battery with Grade A+ Cells, 4000+ Deep Cycle Lithium Iron Phosphate Rechargeable Battery with 20A BMS for Fish Finder, Solar, Lighting, Alarm System

**Brand:** dr.prepare
**Price:** 77555 Ft
**Availability:** ✅ In Stock

## Summary

> 🔋 Power Smarter, Live Lighter — The Future of Portable Energy

## Quick Answers

- **What is this?** 12V 20Ah LiFePO4 Lithium Battery with Grade A+ Cells, 4000+ Deep Cycle Lithium Iron Phosphate Rechargeable Battery with 20A BMS for Fish Finder, Solar, Lighting, Alarm System by dr.prepare
- **How much does it cost?** 77555 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/740172282-12v-20ah-lifepo4-lithium-battery-with-grade-a-cells-4000)

## Best For

- dr.prepare enthusiasts

## Why This Product

- Trusted dr.prepare brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Modular & Scalable:** Supports series & parallel connections up to 16 units, empowering you to build custom 12V to 48V battery banks with up to 4.1 kWh capacity.
- • **Featherweight Power:** At just 5.95 lbs, it’s 60% lighter than lead-acid batteries—easy to install, carry, and upgrade your setup.
- • **Intelligent 20A BMS:** Six-layer smart protection guards against overcharge, over-discharge, short circuit, and more for ultimate reliability.
- • **Unmatched Longevity:** Over 4000 deep cycles means your power lasts way beyond traditional batteries—cut replacement costs and downtime.
- • **Versatile & Eco-Friendly:** Perfect for fish finders, solar systems, alarms, and outdoor gear—plus no heavy metals, so you power up sustainably.

## Overview

The DR.PREPARE 12V 20Ah LiFePO4 battery combines Grade A+ cells with a robust 20A BMS offering six safety protections and IP56 water/dust resistance. Delivering over 4000 deep cycles and 100% discharge capacity, it outperforms traditional lead-acid batteries while weighing 60% less. Its modular design supports series and parallel connections for scalable power solutions, ideal for solar, security, and outdoor applications—all with an eco-conscious footprint.

## Description

Buy DR.PREPARE 12V 20Ah LiFePO4 Lithium Battery with Grade A+ Cells, 4000+ Deep Cycle Lithium Iron Phosphate Rechargeable Battery with 20A BMS for Fish Finder, Solar, Lighting, Alarm System: 12V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: New battery, not old stock! - After a full initial charge, I discharged the battery down to 10.5 V, and it rebounded quickly to 11 V. So far, I’m very happy with the performance. This test was done at a 2-amp discharge rate, and the voltage stayed extremely steady right up until cutoff. A heavier load test is coming next. Before running a higher-current test on the 20 Ah battery, I also tested the 100 Ah battery I purchased—and the results were excellent. I had to be gentle with my tester to pull enough current over a reasonable time span, but I managed to measure 99.12 Ah over approximately 9 hours and 57 minutes, at an estimated 8–10 amp draw. These were the very first charge and discharge tests, completed within days of receiving the batteries. I plan to continue testing and will update this review if anything changes. As of now, $120 for 100 Ah and $46 for 20 Ah feels like a very solid value. Update (2-7-26): After a few months of light, occasional use, both batteries are still performing great. I recently purchased a BT90 Pro battery tester with lithium testing capability. After partially discharging the 100 Ah battery and letting it sit unused for a couple of months, the tester still reported it as being in excellent, full-charge condition. Out of curiosity, I also tested the battery’s 100-amp maximum discharge rating using a Harbor Freight CEN-TECH 100-amp load tester. It successfully delivered 100 amps for 9 seconds without the voltage dropping below 12.6 V. The battery stayed cool throughout the test, and the BMS did not trip. Everything continues to work exactly as expected. I’ll keep testing and updating if anything changes.
Review: Great product - Works great haven't had any problems out of this battery. Have been going o 6 months now problems

## Features

- 【Built-in 20A BMS Protection, Grade A+ Cells】Our lithium batteries feature a built-in BMS with six safeguards: high temperature, overcharge, over-discharge, overcurrent, short circuit, and auto balance protection. Coupled with IP56 water and dust resistance capabilities, it ensures durability in various conditions. Moreover, devoid of heavy and rare metals, our LiFePO4 batteries are environmentally friendly.
- 【Longer Lifetime, Lower Costs】Dr.Prepare12V 20Ah LiFePO4 batteries offer over 4,000 cycles, surpassing the 300-500 cycles of lead acid batteries. Compared to SLA's 40-60% discharge, our lithium batteries are able to discharge 100%, extending the time between replacements, leading to significant cost savings.
- 【Series and Parallel Connection】Our lithium batteries support wiring in series to create a 24V/36V/48V 20Ah battery bank system. Additionally, they can be wired in parallel to build a 12V 40Ah/60Ah/80Ah system. Furthermore, you can connect up to 16 batteries in both series and parallel to construct a robust battery bank system with a total capacity of 4.096 kWh. Kindly note that ensure all batteries are fully charged individually before connecting in series.
- 【Cut the Weight by 60%, No More Heavy Lifting】Dr.Prepare's 12 volt 20Ah lithium deep battery weighs only 5.95 lbs, equivalent to five 500ml water bottles. In comparison, a sealed lead-acid battery typically weighs around 20 lbs, resulting in a remarkable 60% reduction in weight.
- 【Wide Applications】Dr.Prepare 12V 20Ah lithium battery is the perfect replacement for your less durable SLA batteries. It is suitable for a variety of applications, including fish finders, small UPS backup power systems ( each battery rated power =256W, 2 Batteries in Series for UPS ＜500W, 4 Batteries in Series for UPS＜1000W), solar gate openers, solar water pump systems, home alarm systems, home security systems, amateur radios, outdoor camping, etc (Not a starter battery).
- 【Kind Reminder】1. Use a compatible AC-to-DC LiFePO4 charger to charge the LiFePO4 battery type with crocodile clips. Do not use general-purpose or lead-acid battery chargers. Optimal charging current is 10A, with a max of 20A.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F6CMRKS9 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #58,443 in Health & Household ( See Top 100 in Health & Household ) #100 in 12V Batteries |
| Customer Reviews | 4.3 4.3 out of 5 stars (365) |
| Date First Available | April 25, 2025 |
| Item Weight | 4.9 pounds |
| Item model number | DBT12100LFP-S48 |
| Manufacturer | DR.PREPARE |
| Product Dimensions | 3 x 7 x 6.5 inches |

## Product Details

- **Battery Cell Composition:** Lithium-Phosphate
- **Brand:** DR.PREPARE
- **Model Name:** 12V 20Ah LiFePO4 Lithium Battery
- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Voltage:** 12.8 Volts

## Images

![12V 20Ah LiFePO4 Lithium Battery with Grade A+ Cells, 4000+ Deep Cycle Lithium Iron Phosphate Rechargeable Battery with 20A BMS for Fish Finder, Solar, Lighting, Alarm System - Image 1](https://m.media-amazon.com/images/I/61SYU0-WBpL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ New battery, not old stock!
*by M***T on November 21, 2025*

After a full initial charge, I discharged the battery down to 10.5 V, and it rebounded quickly to 11 V. So far, I’m very happy with the performance. This test was done at a 2-amp discharge rate, and the voltage stayed extremely steady right up until cutoff. A heavier load test is coming next. Before running a higher-current test on the 20 Ah battery, I also tested the 100 Ah battery I purchased—and the results were excellent. I had to be gentle with my tester to pull enough current over a reasonable time span, but I managed to measure 99.12 Ah over approximately 9 hours and 57 minutes, at an estimated 8–10 amp draw. These were the very first charge and discharge tests, completed within days of receiving the batteries. I plan to continue testing and will update this review if anything changes. As of now, $120 for 100 Ah and $46 for 20 Ah feels like a very solid value. Update (2-7-26): After a few months of light, occasional use, both batteries are still performing great. I recently purchased a BT90 Pro battery tester with lithium testing capability. After partially discharging the 100 Ah battery and letting it sit unused for a couple of months, the tester still reported it as being in excellent, full-charge condition. Out of curiosity, I also tested the battery’s 100-amp maximum discharge rating using a Harbor Freight CEN-TECH 100-amp load tester. It successfully delivered 100 amps for 9 seconds without the voltage dropping below 12.6 V. The battery stayed cool throughout the test, and the BMS did not trip. Everything continues to work exactly as expected. I’ll keep testing and updating if anything changes.

### ⭐⭐⭐⭐⭐ Great product
*by T***M on January 1, 2026*

Works great haven't had any problems out of this battery. Have been going o 6 months now problems

### ⭐⭐⭐⭐⭐ Great buy . Got them for the boat too .
*by R***O on January 5, 2026*

Surprised me , replace 8 6 volt batterys that weighed over 480 lbs with 4 of these . Works great . They are 27 lbs apiece which is 108 lbs .

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-12*