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Battery Tender Plus - effective charging question

February 16, 2015, 06:22:36 pm

I spotted a Battery Tender Plus on the shelf at Costco, after reading good reviews here I purchased it.
My question;
Can one charger keep my 3 chassis battery's (900 amp, hrs each) maintained during storage?
How about my coach batteries ( 4 - 6V -T145) ?

Thanks.

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Re: Battery Tender Plus - effective charging question

Reply #1 – February 16, 2015, 07:38:40 pm

You don't need a very big charger for storage.

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Re: Battery Tender Plus - effective charging question

Reply #2 – February 16, 2015, 09:34:18 pm

I use a Battery Tender Plus (5 amp) to keep two chassis batteries charged. I expect it would keep three charged with no problem. I expect your chassis batteries are 900 CCA rather that 900 AH.

I would expect the Battery Tender would keep your house batteries charged if there are no loads on them.

Try it. The Battery Tender will show a steady green light if the battery voltage is at reasonable float level. If the voltage drops below float level, or never reaches float level, the green light will flash. The flashing light indicates that the Tender is trying to bring the battery up to float level.

I use several Battery Tenders, and have recently bought some Battery Minders. They are similar devices. The Battery Minders include a desulphator function. I've been pleased with both brands. I have a battery that I use in place of a power supply for some HF amateur radios. One Battery Minder did not keep the charge up, so I added a Battery Tender. The two 1.5 amp chargers have been doing the job.

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Re: Battery Tender Plus - effective charging question

Reply #3 – February 17, 2015, 10:36:21 am

I use a battery tender jr on my chassis batteries and it works fine.  The coach is always plugged into 50 amp plug so house batteries are always up.  I also use battery tender jr on several pieces of equipment and they work great.

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Re: Battery Tender Plus - effective charging question

Reply #4 – February 17, 2015, 10:44:02 am

Also use a 5 Amp Battery Tender on the chassis batt's, Not a big believer in the magic miracle gizmos.
Keeping things simple makes it easy to know what is going on. Start tying systems together just confuses everything for this dumb bunny.

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