APC Back-UPS BK400B UPS battery pack replacement sealed lead VRLA
Replacement APC Back-UPS BK400B UPS battery pack, rechargeable sealed lead acid, safe non-spillable valve regulated VRLA batteries with advanced AGM technology at low competitive cost

On this page you will find all of the required data to support a set of replacement batteries for the APC Back-UPS BK400B, the system utilises storage batteries to filter the mains input electricity and output a clean safe supply without spikes to protect your delicate equipment behind it they are 12v cells, and comes with 1 x 12-volt batteries which is what the offer on this page is, as you would expect they are rechargeable and not-hazardous they are also recyclable to give them a long life and environmentally friendly, more information on recycling can be found on our recycle page

• APC Back-UPS BK400B battery replacement

The batteries that we send to you will be almost fully charged but the system will still need to complete a service charge after installing, it goes without saying that until this has finished you will not have the benefit of full runtime protection, if you can it would be best to allow the initial charge without any load to start, we know this may not be convenient in a lot of installations but that is best advise it's up to you whether you heed it

It would not be unreasonable to expect batteries to last between 2 to five years in this APC UPS, this will be very dependent on the use and the way the system is stored, supplying adequate ventilation is important, the batteries are being continuously used the hotter they get the shorter the life span, try and keep the load below 40% if you can, while it may well be capable of more it will shorten the battery life

These batteries will require no general maintenance, they are AGM and VRLA, they are also not-hazardous so safe to use in busy data centres or the home office, they can be used in rack mountable or tower systems as they will not leak if mounted on the side

Many codes on UPS systems are very similar, carefully check them before ordering to ensure you are getting the right pack, the batteries themselves are recyclable, more detailed information about recycling lead batteries can be found on a link at the foot of this page

Voltage = 12-volts
Capacity = 7Ah @20Hr
Chemistry = sealed lead acid, VRLA, AGM
Hot swap capable

There are a total of 1 lead acid batteries for the APC Back-UPS BK400B here is the dimensions of a single battery
Length = 151mm
Width = 65mm
Height = 94mm
Battery layout - from chart below = 5

We can offer you a 9-amp hour version of this battery size, this will give you a longer runtime between charges, a very simple upgrade with great benefits, the link to this extended version is just a little bit further down the page