Can i change my 650w ups battery with a car battery?
Can i change my 650w ups battery with a car battery or a higher one if yes what are the things to be consideredor rather i want to change it to a bigger and powerfull battery used on a high power ups
Answer
Yes you can, because i have had just this setup walking for over two years now. there are somethings you need to know: first off, as others pointed out, you need to use deep cycle (marine) batteries. secondly, you need to use a good heavy cable (i used 6gauge battery cables from sears) to be sure that the cables do not overheat with extended use. i know the cable inside the ups is only around 12gauge, but it is short.next, you need to be aware that charging lead acid battery does produce explosive gas (in small quantities typically). so do not locate this near a source of heat or sparks/flame. also, the lead acid batteries tend to corrode things around them due to the sulphuric acid in the air around them. so you will want to make sure the batteries are not right next to electronic equipment. i put mine on the other side of a wall (small hole in the closet wall). you will want to get some corrosion proof cases for your batteries. sears sells battery boxes for around $10. get them.you need to remember that lead acid wet cell batteries do require maintenance. you need to check their water level e month at the least, or they will dry out, and not work (and get ruined).you can expect great runtimes with this setup. the battery that comes with most 650va upses is 12amp hour. marined batteries are typically over 100 amp hours. you can put two of them in parallel (not series) to increase the runtime if you desire.you will need a separate marine battery charger for when the batteries get any significant drain (i.e. you use them for an hour or more). the chargers built in to the ups are just float chargers, and provide little current.keep in mind that a bigger battery does not mean you can put a bigger load on the ups (more things plugged in). it means that the runtime will be longer... (much longer). off one 105amphour battery i did a test and ran a 1.2 ghz duron for over 8 hours. when i then charged the battery the charger claimed it was still around half full. ymmvgood luck. and use this info at your own risk!
