Victron AGM Deep Cycle Battery 12V 165Ah, deep cycle VRLA battery, low self-discharge

Deep Cycle AGM batteries

Victron deep cycle 12V AGM batteries

VRLA technology

VRLA stands for Valve Regulated Lead Acid, meaning the battery cells are valve-regulated, and gas generated by overcharging or a cell failure can escape through a safety valve. VRLA batteries have excellent leak resistance and can be used in any orientation. They are completely maintenance-free.

Sealed (VRLA) AGM batteries

AGM stands for Absorbent Glass Mat. In this type of battery, the electrolyte is absorbed by capillary action into a mat of fine glass fibers. In our book "Immer Strom" (Always Power), we pointed out that AGM batteries are primarily suitable for short-term high current requirements (engine starting).

Low self-discharge

Thanks to the use of lead-calcium grids and high-purity materials, Victron VRLA batteries can be stored for extended periods without recharging. The self-discharge rate is less than 2% per month at 20°C. It doubles for every 10°C increase in temperature. When stored in cool conditions, Victron VRLA batteries can be stored for up to one year without recharging.

Excellent performance after deep discharge

Victron VRLA batteries exhibit excellent recovery characteristics, even after prolonged deep discharge. However, it should be noted that frequent and prolonged deep discharges can cause irreversible damage, even to Victron batteries.

Battery discharge behavior

The nominal capacity of Victron batteries is based on a discharge time of 20 hours, i.e., a discharge current of 0.1 C. A lower discharge current increases the effective capacity, and conversely, a higher discharge current decreases it (see table in the datasheet). The Victron AGM series is characterized by excellent performance at high discharge currents.