Maplins L21AC battery non-spill 4.5ah AGM 6v replacement batteries.
Replacement Maplins L21AC battery, rechargeable compatible 6v sealed lead non-spill VRLA AGM batteries at low price direct from the warehouse.

This size battery can be found in many devices. Maybe a high-powered handheld torch, domestic alarm system right through to essential life-saving medical equipment. This popular size is indeed used in a lot of equipment. Probably more often than not, this would be a portable device because it will not spill if mounted on its side but just at home in a fixed device such as an alarm system.

• Maplins L21AC

If you are using this in something like a commercial alarm system, then its built-in charger will take care of the battery for you and will probably do a much better job than you and last many years. If, however, it is going in a more portable device, then fully charge when it arrives and first use, recharge after every use. If not used for long periods, set every eight weeks to help slow down the effect of natural self-discharge. But we do not suggest leaving it on the charger too long until a full capacity charge has been reached.

Voltage = 6v
Capacity = 4.5Ah @ 20Hr
Chemistry = AGM, VRLA

The overall dimensions of this Maplins L21AC battery replacement are as follows:
Length = 70mm or 2.75-inches
Width = 47mm or 2.91-inches
Height = 100mm or 3.93-inches