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Old 08-06-2019, 02:09 PM   #1
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Battery Charger Selection

So after all the work refurbing my charger I've come to the conclusion it is not working, even though it buzzes loudly on the 30/50 setting. Shows nothing on the DMM and doesn't spark when touching the clamps.
What kind of charger am I looking for that isn't going to break the bank.
I saw this one at O'Reilly, but wanted to research first before plunking down $100 on the wrong one.


https://www.ebay.com/itm/Schumacher-...UAAOSwXnxcHayK
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Old 08-06-2019, 02:37 PM   #2
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Will you be charging AGM or lithium's?
Didn't see anything in the specs on those types???
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Old 08-06-2019, 02:41 PM   #3
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I have a Schumacher. My dad has a Schumacher. They are those 2/10/50 Amp models. A little underpowered for starting, but otherwise work great and have lasted for years.
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Old 08-06-2019, 03:32 PM   #4
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Exactly what is the bank - batt model, Ah capacity?

Deep cycling? Do you want to be able to minimize charge time? Is bank longevity important to you?

Do you want the flexibility to choose different chemistry batteries in the future? Or don't mind buying a new charger every time you change chemistries?

Are you only charging within the U.S.?

Automotive style chargers are really just for overnight charging of small Starter batts.
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Old 08-06-2019, 04:17 PM   #5
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We need to know the size and chemistry of the bank.

That said, the inverters with built in charger and transfer switch are nice because of the automation and ability to choose chemistry type and you can tune the amp rate to match the size of your bank.

At the end of the day you want a three stage charger though: bulk, saturation, and float.
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Old 08-06-2019, 04:56 PM   #6
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Right now I will have 3-27DC FLA batteries with 750CCA. I will eventually replace the 27DC start batteries with something more compatible, and add those 2 27DC batteries to the house bank. I took both batteries to O'Reilly's for charge and test. The first one charged for 111 minutes and came back as "Bad Battery". I didn't bother waiting to charge the other, since they were in series I assume both would be in the same condition and took them back to Walmart with the test results. Of course they need to test them themselves, can't take O'Reilly's test results. So I got to wait another hour, while waiting the kid says it's charging and is now at 12.5v and is 1/4 of the way through charge. I tell them just call me when they are ready. They just called while I was typing this reply to tell me both of them came up bad and they will replace them, so a third trip to town to retrieve them.
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Old 08-06-2019, 05:53 PM   #7
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Just realized I assumed you were looking for something to charge your house bank. Is this charger for your starting bank?
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Old 08-06-2019, 06:48 PM   #8
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Quote:
Originally Posted by david.dgeorge07 View Post
Just realized I assumed you were looking for something to charge your house bank. Is this charger for your starting bank?
I'm thinking of a charger to handle the house bank.
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Old 08-07-2019, 01:55 AM   #9
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Well then you should give the specs ideally links, for the specific model deep cycling batteries you plan to use for House.

As well as answering the other Qs I asked above.

https://marinehowto.com/what-is-a-deep-cycle-battery/

If in the US, the best battery value by far is Duracell (actually Deka/East Penn) FLA deep cycle golf cart batteries, 2x6V, around $200 per 200+AH @12V pair from BatteriesPlus or Sam's Club. Deka labeled same batts also sold at Lowes.
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Old 08-07-2019, 07:16 AM   #10
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If going FLA you will have more peace of mind if your box for them is outside the cabin like the starter bank is. Hydrogen gas does come from FLA batts when they cycle.
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