how to recondition old dead batteries

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  1. how to recondition old dead batteries 🔴how to how to recondition old dead batteries for 06-29-2017, 07:43 PM #1 #1
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    Any hope of reviving a neglected forklift battery?

    Vehicle: Hyster electric pallet jack

    Battery: 24-volt type 12-d100-13, 600 a-h at 6 hr rate.

    Symptoms: Meter reads about 12 volts now, several cells I checked had no liquid visible, not aware of operating history but I suspect machine has been idle for a good while, maybe years.

    Question: Is battery hopelessly dead and only good for a core trade-in, or should I add distilled water, pray, charge it, and see if it''div-gpt-ad-Forum_1''ll revive?
    I would think the first step would be to add distilled water to bring the levels up, then try charging
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  • 06-29-2017, how to recondition old dead batteries 🔴how to how to recondition old dead batteries for 11:54 PM how to recondition old dead batteries 🔴how to how to recondition old dead batteries for #3 #3
    Cast for 1 last update 2020/07/16 Iron Cast Iron
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    If you can, you''ve been told by "battery people" that any part of the plates that gets above the electrolyte level is dead and can never be revived. I don''ve ever tried to revive with plates showing didn''t here yet, he suggested charging or tickling 6 cells at a time with car-type 12v charger. I''ll keep alternating ends of the battery every day or two. No idea if battery will take full or near full charge after we get the 24v. Charger, but the experiment is somewhat encouraging.
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  • 07-11-2017, 08:31 the 1 last update 2020/07/16 PM07-11-2017, 08:31 PM #5
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    They have those fancy little chargers now for car battery''t remember the name,
    but I need one (or 2). They have a "refurb" or something option on them.. They drain the
    battery down to flat out fucking dead, and then re-charge opposite polarity.. All the shit falls
    off the plates, then drain it dead again and recharge proper polarity..

    I''t know how well they work at reconditioning.. Maybe you could do half and half(12v and
    12V), and then you''ve heard is as the shit falls off the plates, if you don''m assuming you are more of a machine shop than a warehouse.. Get a couple car or RV or
    marine batteries.. You aren''ve got an electric pallet jack here.. Its been sitting out back for years..
    For a machine shop, they are too bulky and way too fast for moving stuff around machines. I''ll get a new life at some point.. Its an electric drive motor and control and
    an electric hydraulic pump.. It''div-gpt-ad-Forum_2''s... I don''ve never used one, I don''ve got a cool little smart charger for your other toys..

    One thing I''t have dead space down at the bottom, you
    can short the whole damn thing out.

    The other thing.. I''t trying to run it ALL day on a single charge.

    Some more food for thought. I''ve got a little
    3 foot by 20 inch manual jack.. Fricken thing is awesome for moving material around, especially when it comes
    in on small pallets...

    My electric pallet jack.. It''ll make a fun toy of some kind at some point.
    Thanks, I think some others suggested using RV batteries or maybe golf cart batteries. I asked a local dealer with decades of experience in electric vehicles and he was sure the high current draw of this 8000 lb. capacity pallet jack would destroy those batteries quickly. I don''d particularly like to hear from anyone who has actually powered a big-battery electric vehicle with, say, a pair of 135 AH or smaller RV/marine deep-cycle batteries.
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  • 07-12-2017, 01:13 for 1 last update 2020/07/16 AM07-12-2017, 01:13 AM #8 #8
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    Originally Posted by Cannonmn
    Thanks, I think some others suggested using RV batteries or maybe golf cart batteries. I asked a local dealer with decades of experience in electric vehicles and he was sure the high current draw of this 8000 lb. capacity pallet jack would destroy those batteries quickly. I don''d particularly like to hear from anyone who has actually powered a big-battery electric vehicle with, say, a pair of 135 AH or smaller RV/marine deep-cycle batteries.
    We used 4 12v deep cycle batteries. wired 2 in parallel. Then wired the paralleled batteries in series to get 24v. It never got used all day but it held up fine for unloading trucks and general moving stuff around.
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  • 07-12-2017, 06:16 AM #9
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    Cannonmn,you should try charging the old batteries, don''ll dilute sulfuric acid too much, fill them little charge them, then again fill little, if they don''div-gpt-ad-Forum_3''t know if there''d use the old battery if it works for that, and may try the RV/marine multi-battery approach if not. I''t even own a manual pallet jack (did have propane forklift though.) I helped tow/slide many heavy machines across the concrete using only a chain and his old electric pallet jack.
    Last edited by Cannonmn; 07-12-2017 at 06:58 AM. Reason: Fix, add
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  • 07-12-2017, 08:02 AM how to recondition old dead batteries 🔥how to how to recondition old dead batteries for #11
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    Originally Posted by GoceKu
    Cannonmn,you should try charging the old batteries, don''ll dilute sulfuric acid too much, fill them little charge them, then again fill little, if they don''d investigate the hybrid car batteries but as it stands I''t know if there''s club have the highest quality batteries made. I went the cheap route for a while.

    If Wally sold it as a 24 month battery, it will last 24 months. But never 26. The club also had larger batteries such as 4D and 8D. They might have been 12 month warranty and would last two summers and one winter. But if you installed them before winter, they wouldn''t afford cheap batteries.
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  • 07-12-2017, 09:12 AM #13
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    You will never bring a stressed battery back to full capacity but the approach you are using is good. Charge for a while, let rest for a day or so and then charge again. What you are trying to do is get excess sulfates off the plates and back into solution. When it goes back into use charge it more frequently because deep discharge will do more damage. With care, including carefully maintaining electrolyte levels you may get years of use.

    Damaged cells can be replaced but that is usually best left to pros. The battery must rest overnight to avoid hydrogen concentration and then the cell connectors are unsoldered, the cell(s) replaced and usually new cell connectors soldered on. It requires use of a torch which is why no hydrogen can be present.
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  • 07-12-2017, how to recondition old dead batteries ☑how to how to recondition old dead batteries for 09:36 for 1 last update 2020/07/16 AM09:36 AM #14
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    Wow......I''re only fooling yourself.
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  • 07-12-2017, 10:04 AM #15
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    Originally Posted by steve-l
    Wow......I''re only fooling yourself.
    Flooded cells with removable caps are all the same basic chemistry. Batteries intended for deep discharge service have greater spacing between the plates to prevent physical damage as sulfates accumulate. This discussion, AFAIK, was 100% about lead-acid batteries. Other than capacity, where too great charging currents can damage smaller batteries the only difference in lift batteries is sealed or refillable. The sealed cells require a different design charger that is gentler, as many older chargers intended for refillable cells may damage them.
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  • 07-12-2017, 10:37 for 1 last update 2020/07/16 AM10:37 AM #16
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    We used 3 8D batteries in a lift and it worked JUST FINE!

    Starting batteries are made for high starting currents while float service batteries made for emergency service.

    What ruins car batteries in a forklift is using the original charger.

    Most lead acid batteries can take a charge rate of 1C where C is the 8 hour rated amp hours and forklift battery design usually is such to be greater than usual as they need to be charged rapidly as they are useless while charging.

    Forklift has a 600 amp battery and some chargers can charge greater than 200 amps.

    An 8D battery can output 1400 to 1700 amps for starring but is rated maybe 140 to 175 amp hours and designed for maybe 50 amp maximum rate of charge.

    Using a 200 amp charger will be equaling the batteries every time resulting in a very short and painful life.

    For a 24 volt intermittent duty device seek out a charger for a wheel chair as they are all over the place now and can be found for a song.

    They usually are well designed and being built for VRLA batteries they. Are far better for the battery.

    For yours continue to charge with automotive charger and monitor the water level.

    It could take a week or 2 since you are below empty...

    Empty is 1.75 volts per cell and full is 2.25 while floating.

    It seems the battery is recovering so continue.

    Check voltage across each cell and if all are close to same you are good.

    One higher or lower by 0.5 volts is a problem.

    Also check specific gravity and same rule applies...All should be close to same.





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  • 07-12-2017, 08:43 PM 07-12-2017, 08:43 PM #17
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    Constant current charger will revive it (assuming of course it is refilled with municipal* or distilled water) , but will never be like new.....if it gave 6 hours straight service when new it might give 1 hour service after constant current charged....but it does work...i have one I used on 25 year old pallet jack batteries for many years.


    Alternative is four new 6 volt Trojan golf cart batteries, which would cost about $550. Would have the advantage of not being as tall and therefore getting under obstacles the regular battery might hit and also being lighter you could lift more than normal pallet jack capacity.

    Constant current charger - Stablemate™- Portable Rental - Applied Energy Solutions

    *distilled water for wet cell batteries is over rated...most city water is pure enough.
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  • 07-12-2017, 10:41 PM #18
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    Hate to argue with above but we will...

    Some city water is heavily treated surface water that is considered soft and low mineral content while others like ours come from 400 ft deep wells that have a great taste and plenty of minerals that can bind to the parts in the battery.

    If chlorine or fluoride are added they introduce other issues.

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  • 07-13-2017, 09:11 AM #19
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    Originally Posted by Tony Quiring
    Hate to argue with above but we will...

    Some city water is heavily treated surface water that is considered soft and low mineral content while others like ours come from 400 ft deep wells that have a great taste and plenty of minerals that can bind to the parts in the battery.

    If chlorine or fluoride are added they introduce other issues.
    The operative word is "most"..... probably true that some city water is harmful but an industrial battery supply old timer in Greenville, SC once told me some examples of electric forklift batteries lasting 20 years using city water.
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  • 07-13-2017, 11:11 AM #20
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    Having family in Greenville we know the water there is very soft so it may be fine so his experience and luck may be fine.

    But given the cost of a forklift battery it would not be wise to try it.

    Car type batteries the gamble is minimal as the cost is small.

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