Need help understanding aspects of batteries

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System
System Posts: 2,511 admin
in Solar Beginners Corner #1
Dear everybody,
Could you help me. I want to find the standard or regulation relate to Deepcycle battery testing, and i want to understand the theory of the deepcycle battery.
Could you help me?
Thank you very much.
Pham Minh Thanh
Ennegy engineer
Vietnam
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #2
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    Re: Battery type??

    Here's a start http://www.windsun.com/Batteries/Battery_FAQ.htm
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

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  • niel
    niel Solar Expert Posts: 10,300 ✭✭✭✭
    #3
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    Re: Need help understanding aspects of batteries

    the best test for batteries is the load test. this is when a load of a specific amount for a particular battery is applied for a determined amount of time in which a certain level of voltage has been reached. most batteries are rated for 20hrs with a draw equal to 1/20th of the ah rating for 20hrs. this is to take the battery down to 10.5v which is considered dead or 100% depth of discharge or 0% state of charge. manufacturers may vary on their testing so it is advisable to check with them on how to go about it.
    the load test is stressfull to a battery, especially if taken to 100% dod, and many of us opt to check battery condition by the at rest voltage and specific gravity readings along with meters that are capable of roughly calculating the general condition.
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  • crewzer
    crewzer Registered Users, Solar Expert Posts: 1,832 ✭✭✭✭
    #4
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    Re: Need help understanding aspects of batteries

    This site may help: http://www.batteryfaq.org/

    Regards,
    Jim / crewzer
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