APC Back-UPS BK400 replacement UPS battery set AGM sealed lead
Replacement APC Back-UPS BK400 rechargeable battery pack, valve regulated sealed lead UPS system batteries with VRLA and AGM technology at low competitive price direct from warehouse

Your UPS is in place to protect your vital equipment behind it, when the light or that alarm noise is telling you it's time to replace the battery then it's wise not to ignore it, it is a very easy job and is well worth the investment of a new battery to protect your valuable data, below is the details of battery replace for the APC Back-UPS BK400, the onboard energy storage facility which give you the runtime back up also helps to filter the mains input supply before releasing on to your valuable equipment behind it without surges and is powered by way of 12v cells, and comes with 1 x 12-volt batteries which is what the offer on this page is which are rechargeable, they're sealed and will not spill any liquids, safe to use AGM and VRLA offering a long life as this equipment will take a lot of work over the years

• APC Back-UPS BK400 battery replacement

Installing the batteries is comparatively simple, refer to your manual for the procedure if you are not sure, they will come out to you almost fully charge but the system will still need to complete a service charge upon firing up, so it of course follows that there will be a period of time where you do not have the full protection that your UPS could offer until it has completed this operation, you will find its better to allow the system to run without load to start to reset the new battery energy level

In this UPS you could expect the batteries to last somewhere between two to five years, this is not a set rule though and a lot will depend on how they are used, using the UPS system as part of the office furniture, putting boxes on it is not the best idea, it needs good ventilation, the batteries will in general use get very hot as they are working hard 24-hours a day, the more heat the shorter their life, keep an eye on the load, do not have to many devices connected, if you can keep it below 40% it will last longer, while its more than capable of going higher it will be at the expense of 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

Ensure that you order the right battery by checking the code on your UPS and comparing it to the information here, many are very similar so it's easy to make a mistake, these hot swap capable batteries are recyclable, more information on this can be found at the bottom on this page on our recycling link.

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

You will find a total of 1 rechargeable batteries as used in the APC Back-UPS BK400 we have mentioned the size below of each battery for your convenience
Length = 151mm
Width = 65mm
Height = 94mm
Battery layout - from chart below = 5

If you want to get the most from your UPS why not upgrade the battery to a 9ah version, it has the same dimensions and can replace the 7ah original without issue with the benefit of a longer runtime, the link to this option is below