Offgridtec AGM solar battery 12V 154Ah 20HR, deep cycle (001005)

The Offgridtec AGM 154Ah 20HR 12V solar battery is a sealed AGM lead-acid battery with a nominal voltage of 12 V and a capacity of 154 Ah (20HR).

AGM technology with bound electrolyte - maintenance-free and leak-proof when used as intended

• 154 Ah nominal capacity (20HR) at 12 V system voltage
• Up to 500 charge/discharge cycles at 50% depth of discharge

It was developed for cyclic applications and is suitable as a solar battery for off-grid systems as well as for uninterruptible power supplies (UPS), telecommunications or emergency power systems. Thanks to AGM technology, the battery is maintenance-free, has low self-discharge and high cycle stability. The technical data are based on the data sheet of the manufacturer.

• AGM battery for reliable energy storage
• Up to 1,200 cycles at 30% depth of discharge
• Very low self-discharge of approx. 2% per month at 25 °C
• Robust ABS housing with durable lead grid construction

Suitable for solar, UPS, telecommunications and emergency power applications

• Float charge (standby) of up to 8 years possible
• AGM technology for cyclic applications

The battery uses proven AGM (Absorbent Glass Mat) technology. The electrolyte is completely bound in a glass fibre mat. This makes the battery maintenance-free and significantly less sensitive to vibrations and changes in position compared to conventional wet batteries. The high cycle stability plays an important role, especially in solar systems with daily charging and discharging. According to the manufacturer, the battery achieves up to 500 cycles at 50% depth of discharge or up to 1,200 cycles at 30% depth of discharge. A lower depth of discharge has a positive effect on the service life of the battery.

• Suitable for numerous stationary applications

The Offgridtec AGM 154Ah was developed for a wide range of stationary energy storage applications. Typical areas of use are:

• Off-grid solar systems
• Uninterruptible power supplies (UPS)
• Telecommunications systems
• Alarm and security technology
• DC power supplies
• Automated control systems
• Emergency power supply

Due to its low self-discharge, the battery is also suitable for systems with longer idle times or seasonal operation.

• Robust construction and reliable performance

The housing is made of impact-resistant ABS plastic. Inside, lead dioxide and lead plates with glass fibre separators are used. The construction is designed for permanently reliable operation and is regularly quality-checked according to the manufacturer. The internal resistance of a fully charged battery is a maximum of 5.0 mΩ, which means that even higher loads can be reliably supplied. The battery has a low self-discharge of around 2% per month at 25 °C, which facilitates longer storage times.

• Notes on charging

For a long service life, the manufacturer recommends different charging voltages for cyclic operation and standby applications:

• Cyclic operation: 14.40–14.60 V (25 °C)
• Maximum charging current: 45 A
• Standby charging: 13.60–13.80 V

A temperature-dependent adjustment of the charging voltage also contributes to gentle battery charging. The data sheet contains corresponding characteristic curves and diagrams.

• Nominal voltage: 12 V
• Model capacity (designation): 154 Ah 20HR
• Measured capacity C20 (20HR) according to the data sheet: 159.2 Ah at 7.96 A to 10.8 V
• Capacity C10 (10HR): 150.0 Ah
• Capacity (5HR): 145.9 Ah
• Capacity (1HR): 97.7 Ah
• Maximum charging voltage (cyclic): 14.40–14.60 V
• Standby charging voltage: 13.60–13.80 V
• Self-discharge: approx. 2%/month (25 °C)
• Internal resistance: ≤ 5.0 mΩ (fully charged, 25 °C)
• Dimensions (L × W × H): 458 × 172 × 240 mm
• Total height: 265 mm
• Weight: approx. 43.0 kg (±5%)
• Housing material: ABS
• Separator: glass fibre
• Electrolyte: sulphuric acid (bound in glass fibre mat)
• Scope of delivery
• 1x Offgridtec AGM 154Ah 20HR 12V solar battery