The Victron Energy 12V 90Ah AGM Deep Cycle Battery is a sealed, maintenance-free lead-acid battery for cyclic use in solar, off-grid and marine systems. It uses absorbed glass mat construction with M6 threaded insert terminals, giving a secure bolt-down connection for professional installs.

Key features

• Capacity, 12V nominal voltage, 90Ah.
• Construction, AGM, sealed and valve-regulated, no risk of acid spillage.
• Terminals, M6 threaded inserts for a vibration-resistant connection with standard M6 bolts and cable lugs.
• Deep cycle rating, built for repeated charge and discharge, unlike standby or starter batteries.
• Weight, 22.5 kg.
• Ecosystem, compatible with Victron chargers, inverter/chargers and battery monitors.

Product overview

AGM batteries hold the electrolyte in a fibreglass mat separator, so there's no free liquid acid. That means the battery can be installed in any orientation other than inverted, and it's safe for enclosed spaces such as boat battery compartments, caravans and off-grid cabins where a vented flooded battery would need extra ventilation.

Being a deep cycle type, it's designed for regular, meaningful discharge and recharge rather than the shallow cycling of automotive or UPS standby batteries. That suits solar storage and inverter backup duties. The M6 threaded inserts take standard M6 bolts, so cable lugs fasten directly rather than relying on clamp connectors that can work loose.

Pair it with a Victron MPPT or inverter/charger and select the correct AGM charge profile to get the best cycle life from it.

Applications

Solar storage in off-grid and hybrid systems, inverter and UPS backup power, marine house battery banks, motorhome and caravan leisure batteries, telecoms power supply, and vehicle-based power systems needing a sealed battery.

Installation notes

Fit by a qualified electrician or experienced system integrator. Set the charge source to the correct AGM profile before connecting, and match batteries by age, capacity and manufacturer when building a bank. Use correctly rated cable lugs at the M6 terminals and avoid overtightening, which can damage the threaded inserts. Install in a well-ventilated location as a precaution. Recycle in line with UK WEEE and hazardous waste regulations.

What's in the box

• 1 x Victron Energy 12V 90Ah AGM Deep Cycle Battery (M6 terminals)