---
product_id: 1746316
title: "SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH."
brand: "vmaxtanks"
price: "€ 1531.22"
currency: EUR
in_stock: true
category: "Vmaxtanks"
url: https://www.desertcart.hr/products/1746316-slr125-agm-battery-for-sump-pump-emergency-backup-and-solar
store_origin: HR
region: Croatia
---

# 12V heavy-duty power 125Ah high capacity 8-10 year float life SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH.

**Brand:** vmaxtanks
**Price:** € 1531.22
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your independence with VMAXTANKS — never get left in the dark again!

## Quick Answers

- **What is this?** SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH. by vmaxtanks
- **How much does it cost?** € 1531.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1746316-slr125-agm-battery-for-sump-pump-emergency-backup-and-solar)

## Best For

- vmaxtanks enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Charging:** Compatible with AC, solar, and wind power sources for ultimate off-grid freedom.
- • **Safe & Clean Energy:** 99% recombination AGM tech means zero harmful fumes or gases—perfect for indoor use.
- • **Power When It Counts:** Delivers consistent 12V and 125Ah capacity for solar, wind, and emergency backup needs.
- • **Ready to Go Anywhere:** Compact Group 31 size with carrying strap and screw-in terminals for easy installation.
- • **Endurance That Outlasts:** Military-grade AGM plates ensure up to a decade of reliable float service life.

## Overview

The VMAXTANKS SLR125 is a 12V, 125Ah Group 31 AGM deep cycle battery designed for solar, wind, sump pumps, and emergency backup generators. Featuring military-grade custom plates and 99% recombination technology, it offers a safe, maintenance-free experience with an impressive 8-10 year float service life. Its versatile charging options and durable build make it a top choice for professionals seeking reliable off-grid power solutions.

## Description

desertcart.com: SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH. : Automotive

## Features

- 12 Volt 125Ah group 31 AGM deep cycle heavy duty battery, 13"L*7"W*8.7"H; includes carrying strap
- 8mm hex screw in terminals (included,for use with ring terminals) . Military grade custom made plates
- Charge using AC, solar or wind power. Float service life span of 8 to 10 years
- AGM with 99% recombination capabilities; no dangerous fumes or gases.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004DR3IIC |
| Battery Capacity | 125 amp_hours |
| Battery Type | Lead-Acid, AGM |
| Best Sellers Rank | #388,726 in Health & Household ( See Top 100 in Health & Household ) #1,232 in Automotive Replacement Batteries #2,394 in 12V Batteries |
| Brand Name | VMAXTANKS |
| Compatible with Vehicle Type | Scooter |
| Customer Reviews | 4.5 4.5 out of 5 stars (95) |
| Item Dimensions D x W x H | 6.8"D x 12.9"W x 8.7"H |
| Item Weight | 75 pounds |
| Manufacturer | VMAXTANKS |
| Manufacturer Part Number | SLR125 |
| Manufacturer Warranty Description | 1 YEAR |
| Model Number | SLR125 |
| Number of Items | 1 |
| Size | Group 31 |
| Terminal | Ring Terminal |
| UPC | 729440163129 |
| Unit Count | 1 Count |
| Voltage | 12 volts |

## Product Details

- **Battery Capacity:** 125 amp_hours
- **Battery Cell Composition:** Lead-Acid, AGM
- **Brand:** VMAXTANKS
- **Item Weight:** 75 pounds
- **Product Dimensions:** 6.8"D x 12.9"W x 8.7"H
- **Size:** Group 31
- **Terminal:** Ring Terminal
- **Unit Count:** 1 Count
- **Vehicle Service Type:** Scooter
- **Voltage:** 12 volts

## Images

![SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH. - Image 1](https://m.media-amazon.com/images/I/81PJMe-Gi6L.jpg)
![SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH. - Image 2](https://m.media-amazon.com/images/I/51SPx+uJztL.jpg)
![SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH. - Image 3](https://m.media-amazon.com/images/I/51rx-hESnfL.jpg)
![SLR125 AGM Battery for Sump Pump Emergency Backup and solar Generators 12V 125AH. - Image 4](https://m.media-amazon.com/images/I/41-DKI2f84L.jpg)

## Questions & Answers

**Q: Will it automaticly stop charging once it is fully charged?  If not, what accessory should I get to make it stop charging?**
A: The battery doesn't have an internal mechanism to stop the inflow of charging power. I use a Schumacher 100 Amp digital (smart) charger for charging on the grid and a Sunforce 30Amp digital charge controller for off grid (solar) charging. They charge at a high rate when the batteries are low and slow to a trickle when maintenance level is reached. My system has 4 ea. 125AHr Vmaxtanks.

**Q: How long at max draw (125 amps an hour) does it take for this battery to rundown to the 50% level with no charge input**
A: Amp hours are a measure of power. Theoretically, the battery should provide 125 amps for one hour at the stated 12 volts. However, at this high a current, I wouldn't count on it. More realistically, the battery should provide 10 amps at 12 volts for 12.5 hours or 20 amps for 6.25 hours...and so on and so forth. My experience is limited because I use them (two of them) along with an inverter to run a refrigerator and a few other pieces of equipment in a back up mode. They have done great when I've needed them!

**Q: What is the recommended depth of discharge for this battery?**
A: Not sure I just have it hooked up to my solar panels and it never past 12.3v

**Q: just charge to 100%. Volt meter now shows that it is loosing a charge...down 15% in three minutes and continuing to slide. Do I need to do something?**
A: Your battery made need to be replaced if it can’t hod a charge.

## Frequently Bought Together

- VMAXTANKS SLR125 Solar Battery 12 Volt 125Ah Group 31 Battery for Solar Wind Sump Pump Emergency Backup Generators and PV panels
- Qty2: VMAX SLR125 AGM Sealed Deep Cycle 12V 125Ah Batteries for Use with Pv Solar Panels, Wind Turbine and Inverters

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**Shop now:** [https://www.desertcart.hr/products/1746316-slr125-agm-battery-for-sump-pump-emergency-backup-and-solar](https://www.desertcart.hr/products/1746316-slr125-agm-battery-for-sump-pump-emergency-backup-and-solar)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-30*