![]() | #481 |
BHPian ![]() Join Date: Oct 2005 Location: Secunderabad
Posts: 347
Thanked: 417 Times
| ![]() This is a 1200 VA inverter and originally designed for 3 hrs back up. Have not really checked the back up time at full-load recently but it more than meets my present needs, so no complaints! |
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![]() | #482 |
Senior - BHPian ![]() Join Date: Jan 2008 Location: Poona
Posts: 1,849
Thanked: 107 Times
| ![]() 5 life times?? How? Surely inverter batts don't have such short lives? As I'd mentioned several weeks ago, our Amaron Shield lasted some 6 years. And it wasn't even a tubular. |
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![]() | #483 |
BHPian ![]() Join Date: Nov 2011 Location: Hyderabad
Posts: 100
Thanked: 53 Times
| ![]() While doing a regular service (air-blow the inverter and fillup distilled water in the battery), the dealer mentioned he has access to half-used/discarded? "dry" batteries used in mobile cell towers and they are much better than the Exide/Bosch/Amaron ones. Mine is a 150AH Bosch one, used for the last 4yr without any issues. Should I replace the Bosch with a dry battery? Thanks. |
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![]() | #484 |
Senior - BHPian ![]() | ![]() How is Mahindra Powerol inverters and batteries ? I got a quote of Rs.21,373 for 800VA Sinewave Invereter and 190ah Mahindra battery. Warranty is 2 years for both. |
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![]() | #485 |
BHPian ![]() Join Date: Sep 2006 Location: Blore
Posts: 545
Thanked: 62 Times
| ![]() I am confused too on what configuration and brand to buy. My requirement: Minimum > 2 CFL's + 2 fans + 1 modem + 1 wi-fi router Maximum > 4 CFL's + 3 fans + 21" CRT TV + 1 modem + 1 wi-fi router Power outage lasts max 2hrs. This happens like 3/4 times a day & night. Options I enquired about: APC 850va + APC 120mah + trolley = 15K (labor + wiring extra) Amaron 875va + Amaron 120mah + trolley + labor = 13K (wiring extra) Luminous 850va + luminous battery + trolley = 13k (wiring & labor extra) Not sure about the rest. Can anyone suggest something here? |
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![]() | #486 | |
Senior - BHPian | ![]() Quote:
Your maximum load comes to 4x50+3x100+300+50+50=900 Watts. Your minimum load comes to 2x50+2x100+50+50=400 Watts. For Maximum load - given the efficiency of max 80%, this translates to approximately 1100VA for 6 hours you can do with a 1KVA inverter and 1000x6=6000KVAH=500AH, which means 4 batteries of 125AH or two of 250AH capacity. For Minimum load - given the efficiency of max 80%, this translates to approximately 500VA for 6 hours = 500x6=3000KVAH=250AH, which means 2 batteries of 125AH or one of 250AH capacity. In your case for an 800VA inverter you should not have more than 300VA load, which will mean a 300x6=1800VAH=150AH battery. So either reduce your load or get a more powerful inverter with two/four batteries. | |
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![]() | #487 | ||
BHPian ![]() Join Date: Sep 2009 Location: Trivandrum, Thrissur
Posts: 160
Thanked: 5 Times
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Quote:
Last edited by Chipz : 29th April 2012 at 20:24. | ||
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![]() | #488 | |
Senior - BHPian ![]() | ![]() Quote:
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![]() | #489 |
BHPian ![]() Join Date: Sep 2006 Location: Blore
Posts: 545
Thanked: 62 Times
| ![]() Thanks aroy and esteem_lover. Due to price constraint, I have decided to stick to 850va + 120ah battery. I will manage the backup time somehow. The question is what inverter & battery combo should I go in for. I think any inverter would be fine, wondering what 120ah battery should I go for amaron / exide / micro (maintainence vs maintainence free) Plz advice so I can freeze this asap. |
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![]() | #490 | |
BHPian ![]() Join Date: Sep 2009 Location: Trivandrum, Thrissur
Posts: 160
Thanked: 5 Times
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![]() | #491 | |
BANNED Join Date: Jun 2008 Location: Bangalore
Posts: 1,284
Thanked: 440 Times
Infractions: 0/1 (7) | ![]() Quote:
My battery capacity is 180 Ah. Do not worry, all these inverter have quick charger and they charge battery really fast. You can surely manage backup with 120 Ah battery. | |
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![]() | #492 |
BHPian ![]() Join Date: Sep 2006 Location: Blore
Posts: 545
Thanked: 62 Times
| ![]() Thanks chipz, anujmishra. I checked with my neighbour and they are using luminous inverter and luminous battery (2+yrs old setup) and happy with the backup. Called the guy who installed it and he quoted 15k (850va+120ah+trolley+labor-wiring cost). I think I am going for it. |
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![]() | #493 | |
BHPian ![]() Join Date: Sep 2009 Location: Trivandrum, Thrissur
Posts: 160
Thanked: 5 Times
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![]() | #494 |
BHPian ![]() Join Date: Sep 2006 Location: Blore
Posts: 545
Thanked: 62 Times
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![]() | #495 |
BHPian ![]() Join Date: Sep 2009 Location: Trivandrum, Thrissur
Posts: 160
Thanked: 5 Times
| ![]() Balcony is good, if u can do the wiring. have u considered buying a branded battery with more warranty. 2 year warranty is less for tubular batteries. |
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