APC 520ES UPS battery pack replacement sealed lead VRLA
Replacement APC 520ES non spill battery pack, safe can be used in portable devices, UPS backup valve regulated sealed lead VRLA AGM rechargeable batteries at low cost

Below you will find we have submitted details to help you make the decision on the purchase of a new set of batteries for your APC 520ES, Your UPS utilises the batteries to help filter the mains supply and output a clean version without any spikes or surges as well as offer you runtime back up energy the cells are 6v cells, and comes with 2 x 6-volt batteries which is what the offer on this page is which are as required, rechargeable, they are safe to use, not-hazardous, not-spillable AGM and VRLA type batteries, more detailed information about the qualities of them will be found below

• APC 520ES 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 have the opportunity it will be best to run the system without a load to start so it can properly reset itself to the new energy level

It would not be unreasonable to expect batteries to last between 2 to five years in this APC UPS, this will however very much depend on how they are used, supplying adequate ventilation is important, the batteries are being continuously used the hotter they get the shorter the life span, to get a long battery life you should try to keep the load below 40%, its capable much more but the pay off will be battery life

The batteries are valve regulated sealed lead acid or VRLA for short with AGM technology, no need for any maintenance and can be mounted on their side in a UPS with fear of leakage, they are not-hazardous so safe for use in hospitals, busy data centres as well as the home office

We have provided the information here as a guide, you should carefully check the code on your UPS as many of them are very similar so it's easy to make a mistake, the batteries are recyclable, more information about recycling can be found on our recycling page, link to which is at the foot of this page

Voltage = 6-volts
Capacity = 10Ah @20Hr
Chemistry = AGM, sealed lead, VRLA
Hot swap capable

This offer is for a total of 2 recyclable lead batteries for the APC 520ES the overall size of each battery is
Length = 151mm
Width = 51mm
Height = 94mm
Battery layout - from chart below = 1