Forum Discussion

pianotuna's avatar
pianotuna
Nomad III
Jul 23, 2015

Battery Solution

Hi All,

Recently I planned to acquire four L-16 agm Surrette Batteries. Cost after installation was going to exceed $3600.00. Capacity was going to be 800 amp-hours. That is $4.50 per amp-hour.

I've been looking at less expensive alternatives and today found some reconditioned AGM 12 volt 140 amp-hour jars which are $120.00 each and will require only minor changes to my system. Capacity will be 560 amp-hours. That is $0.85 per amp-hour.

The reconditioned jars come with a six month warranty. I have measured 276 amps of load which will work out to 11.5 amps per cell.

The Surrette's would be doing 23 amps per cell.

I know the Surrette's are a better battery--but I can not justify the cost difference.

19 Replies

  • I had a friend in Ocala, Fl that actually rebuilt batteries, he took the old battery apart, put in new plates, new acid and charged them. His price was about 1/2 what a new one cost.
  • My surplus ..CD technology AGMs turned 4 years of daily use this month, they are rated new 139 amp hrs, they are taller than group 29/31 and weigh 100# each and yes that's the C20 rating

    Sounds like PT found some of the same ones...great batteries
  • I had 600 AH of Lifelines delivered for $1,600. 4x GPL-6CT. I know you have some size contraints.
  • I think a reconditioned battery is simply an abused battery still in the warranty period, chronically undercharged and returned by an indignant, but incredibly ignorant owner who makes such a stink, they give him new batteries just to go away.

    The seller then performs a conditioning cycle similar to lifeline's procedure on the battery and tries to lower their loss from warrantying the battery in the first place.

    I would so despise being in a position to make the modern consumer happy.

    I wouldn't buy reconditioned batteries. Who knows how badly they were mistreated by the nimrods which make up so much of the battery buying public
  • There are lots of AGM's that live at float in power supplies. You recondition them with top charging and equalization. I wouldn't want one that needed to be recovered.
  • We have a guy here that sells batteries like that as well as older new ones. I nearly bought some Leoch 250 Ah 8-D AGM's with a years warranty for $370 each before the lifelines showed up. He also has a bunch of 139 and 149 Ah AGM's

    I think if you feel it's a good deal where you are and they come with a 6 month warranty, then get them. Give them a beating and see if they hold up, take the ones that don't back. Repeat.
  • not being a smart %%% how do you recondition a battery. in this new world its possible to do most anything.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    So is there either a question or a link to the AGMs?

    I am not a great fan of AGMs but I do have one word of caution.

    The Standard for rating battery capacity is amp hours at the C/20 rate.. Thus a Group 31 is normally about 130 amp hours (though as manufacturing methods and materials improve I'd not be surprised to see it hit 140)

    But some companies use different means to measure the capacity.. Wal*Mart, for example uses the 1 amp method.. how long does it take to discharge at 1 amp constant current?

    Well that means a group 24 (73 amp hours at C/20) will last over 100 hours at 1 amp. I keep forgetting how to spell the name of the effect/law purket or some such but you need to know about that when battery shopping cause of the old not joke

    How to tell when a salesman is lying? (you know the answer I'm sure)

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