A compact 12 V energy reserve
This AGM lead-acid battery delivers 12 V and is rated at 33 Ah, which equals 396 Wh. Its VRLA design, with regulated valves, makes it a sealed block that is straightforward to fit and works together with a suitable charger or solar charge controller. It fits naturally into a small off-grid setup: a garden shed, emergency lighting, a measuring cabinet or a backup supply aboard a leisure boat.
Where it fits
Private users
Owners of caravans, small boats or garden huts can power modest 12 V loads with it: a pump, LED lighting, a small fan, or phone charging through a suitable inverter. The capacity is moderate, so estimate what your devices draw before settling on this size.
Professional users
In a workshop or on a building site it can act as a buffer source for signalling gear, an alarm system or a small measuring instrument. Installers will like the compact footprint when several blocks have to be paralleled.
Build
The case measures 195 x 130 x 159 mm and the unit weighs 10.2 kg. Wiring is done through an M6 connection, so lugs and fasteners must be sized accordingly. The maximum charging current is 9.9 A, and your charger should stay below that figure.
Fitting and wiring
- Pick a dry, stable and ventilated spot away from heat sources.
- Secure the battery so it cannot shift while the vehicle or boat moves.
- Use cables sized for the expected current and protect the circuit with a suitable fuse.
- Tighten the M6 terminals without overdoing it and check polarity before switching on.
Any connection to a fixed installation or a household network should be handled by a qualified installer.
Strengths of this model
With 396 Wh packed into 195 x 130 x 159 mm, this unit strikes a sensible balance between footprint and stored energy. The VRLA design means there is no need to top up liquid, and the M6 connection suits a sturdy, well-fastened wiring job. To double the capacity you can couple two identical blocks, provided you follow the instructions in the manufacturer’s manual. For anyone sizing a small system, the 12 V rating also keeps component choice simple.
Technical specifications
- Type: AGM battery, VRLA technology
- Voltage: 12 V
- Capacity: 33 Ah / 396 Wh
- Maximum charging current: 9.9 A
- Connection: M6
- Dimensions: 195 x 130 x 159 mm
- Weight: 10.2 kg
Safety
Never exceed the stated charging current, and use only a charger that suits AGM batteries. Prevent short circuits by insulating metal tools during assembly. Keep the unit away from flames and sparks, and do not pierce or deform it.
Care and storage
Keep the terminals clean and tight. When the battery sits unused, store it somewhere cool and dry and check its charge from time to time to avoid deep discharge. If in doubt, refer to the manufacturer’s manual.
