BatteryMINDer Plus Battery Charger/Trickle Charger/Desulfator, 12 Volt, 1 Amp, Model# 12117TC

Manual has diagram showing parallel wiring of two 12vt batteries and where to connect charger. Also shows how to wire up multiple 6vt batteries as well. I have three 12vt lead-acid batteries in parallel charging/maintaining on my shop bench with no issues.

I have maintained 2 batteries, just remember to connect them parallel

Yes, you can do this, but it's best to start with two batteries that are already charged. If one is low and the other charged, the charged one will dump into the low one at very high current until they are equalized.

yes 12volt configuration

Yes, similar batteries like that are no problem, there should be a diagram on the packaging to show you, but as you said, just parrallell them and you can plug it in and leave it for the winter with no worries.

I have had no problems maintaing two batteries long term.

yes as long as you keep them in 12volt groups

That is exactly what we routinely do. We connect batteries on small tractors, big tractors, and miscellaneous equipment in the same shed with small jumpers that we have made just for that purpose. One maintainer can handle multiple batteries all through the off-season. Those little units are designed to do just that.

This charger is designed to maintain up to five 12 volt batteries in parallel. It will not over charge or damage the batteries no matter how long they are hooked up.

I believe it will as long as they are hooked in series.

connect in series for 12 volt configuration

Yes. According to the BatteryMINDer manual, it can maintain 6V batteries. You just need to need to makes sure you have them hooked up in series (which you've already done).

Hooked in series, this charger will work.

I asked VDC Electronics the same question.
According to VDC Electronics, as long as the batteries are fully charged before the really cold weather sets in the battery minder will maintain you batteries just fine.

Yes, as long as they are hooked up in series and they are about the same age and used about the same. In other words a 10 year old barely working battery can't be in series with a new battery.

Yes, this will maintain them. First each battery must be fully charged, then wire them back to series.

yes i would disconnect the charger before starting the car.this is a low amp charger it would take several hours to charge a low car battery.

Yes, to be safe I would disconnect this type of charger before starting vehicle. This type of charger isn't of the starter/charger type. For example 50 amps boost while starting. Hope this helps.

Yes. I don't know if you should but I always do just to make sure I don't damage the charger or the vehicle.

I always do just to be on the safe side

Always disconnect the charger completely before starting the vehicle.

I have a ring connector that came with a different charger and I use it with this charger often. As long as the ring connector is connected in the proper polarity, it will be fine.

I have an older schumaker trickle charger and its the same and my batteryminder. It has a polarity sensor so it should not cause any damage on the chance that its not wired the same.

Yes, it should work.

It is recommended to use the Battery MINDer Ring Terminal Assembly with this item. That is item 44103. Please view my recommendation below.

yes, you would need one for each if you don't plan on removing the battery from the vehicle. If you do remove the batteries, you can charge/maintain up to 4 12v batteries connected in parallel, just make sure all are fully charged before connecting them together.

It won't charge multiple batteries evenly unless they are all the same type and size. Best to have one for each battery or just swap it around.

The instructions say that if the battery conditions are about the same you can put up to 4 batteries hooked in parallel. I only attach 2 batteries to each charger/ maintainer.

You can purchase a cable that plugs in to this then the cable splits into two or three or more cables so you can charge several batteries at the same time.

It has always restarted for me, there should be no need to restart it.
Great product in my opinion.

When power is restored MINDer will come back on. No need to do anything.

Yes, it will restart automatically when the power comes back on.

The charger will automatically begin to charge when power is restored.

Seems to work fine either from a wall outlet or an extension cord.

I used an extension cord 14/3 for my boat and Harley. I am very pleased. Bought two for Christmas gifts for my sons also.

Pleased!

Yes I have used it on the end of a 25 foot extension cord and it keeps my tractor and skid steer fully charged.

The Battery MINDer Plus can be safely used with an extension cord.

The batteries it can be used on are clearly stated in the product description. I DON'T see lithium-ion.

A lithium ion battery should not be charged with this charger. lithium ion batteries have specialized charging and discharging electronic systems. This charger outputs a special pulsed waveform that desulfates lead acid batteries. I believe these pulses would be very harmful to the electronics in the lithium ion battery.

I agree. I use it to maintain my car battery through the winter when it is garaged.

This charger cannot be used on 12 volt Lithium-Ion batteries.

I am using mine in a metal building barn with no heat. I think that if the battery will survive the charger certainly will. The intermittent electrical pulse will help both to be happier in the cold. There is nothing on the charger that can freeze.

As long as you follow directions, keep it away from the battery fumes, and plug it into a safe cord or electrical circuit it should be safe if it hasn't been dropped or damaged. But be aware if exposed to extreme cold for long period you may run a risk of your batteries freezing and bursting.

I don't think there is a risk of fire from this product, that said the battery itself may not be stable below zero, especially if old and won't hold a charge.

The BatteryMINDer features a recommended temperature range for use of 0 to 120 degrees Fahrenheit. The unit features a safety isolation transformer that will switch the product off if it reaches a certain temperature.

Absolutely!

It should, I use them on 2 different compact tractors and a UTV, as long as it has a 12 volt battery it should work fine.

Yes, but remember the BatteryMINDer 12117 is not temperature compensated or waterproof. We also recommend the BatteryMINDer 2012, 2 amp (Item# 20295). It's weatherproof, fully automatic, and temperature compensated.

This BatteryMINDer Charger/Maintainer/Desulfator extends performance and life of all types and sizes of 12 Volt lead acid batteries, including all starter, deep cycle, maintenance-free, sealed AGM, gelled or dry-type batteries, regardless of size or make. It will work on a Mahindra EMAX 25.