12 Volt 120 AH Gel Battery
Due to their construction, the gel cell and AGM types of VRLA can be mounted in any orientation, and do not require constant maintenance. The term "maintenance free" is a misnomer as VRLA batteries still require cleaning and regular functional testing. They are widely used in large portable electrical devices, off-grid power systems, and similar roles, where large amounts of storage are needed at a lower cost than other low-maintenance technologies like lithium-ion.