BatteryMinder Battery Charger / Maintainer with Desulphator — 12 Volt 2/4/8 Amp, Model# 12248
3-stage smart microprocessor-controlled BatteryMinder® has built-in desulfator that automatically dissolves harmful power-robbing, life-shortening sulphation using safe high-frequency "sweep pulse" technology. Safely charges any size/type or brand of 12V lead-acid battery, including wet, dry-sealed gel, AGM and maintenance-free spiral types — with no overcharging. Not for use with 12V aircraft battery.
Product Specs
Key Specs
Charges | 12V lead-acid battery, including wet, dry-sealed gel, AGM and maintenance-free spiral types |
Maintains | Yes |
Desulfates | Yes |
Amps | 2, 4, 8 |
Charges Multiple Batteries (qty.) | 6 |
Overcharge Protection | yes |
Polarity Reversal Protection | Yes |
Additional Specs
- 3-stage microprocessor controlled charger/maintainer with desulphator
- Full-time random sweep desulphation
- Patented high-frequency pulse technology dissolves harmful sulphation
- Charges and maintains up to 6 batteries at a time (parallel connected)
- Built-in sulfation tester
- Short circuit protection
- Recovers deeply discharged batteries
- Rejects bad batteries
- Portable or mountable
- Weatherproof construction
- High efficiency
- Low operating cost
- Manual override allows for maintenance/desulphation only storage mode
- Allows battery to be stored safely at 0°F to 120°F
- Can double battery life when used with battery temperature compensation sensor, Item# 167953, sold separately
- Includes Qwik-connect/disconnect battery clips and ring terminal assembly for permanent connection
- 12V output @ 2/4/8 Amps
- 6in.L x 6in.W x 3in.H
- Not for use with 12V aircraft battery
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Customer Product Reviews
Overall Rating:
4.6
/
5
30 of 31(97%)would recommend this product to a friend.
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Review This Product
Overall Rating:
5
/
5
Does it all,
October 19, 2009
By tomjasz
from MN
"Great charger for everthing from the small AGM in my scooter to the deep cycle 53lb battery for my trolling motor!!"
What is your level of technical expertise? Home Handyman
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Overall Rating:
5
/
5
A Battery Saved Will Pay for this Maintainer!,
October 19, 2009
By Rasloper
from El Dorado Hills, Ca.
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"If I had a battery for every 5 batteries that have died over the years I would have enough batteries to last the rest of my life! However in the real world such is not the case until now. This Battery Minder came highly recommended, but as always I remained unconvinced. At 60 I have extensive experience in the 12v world Boats, Cars, Motorcycles, Aircraft even off grid 12v home systems and this is the first charger that has worked as advertised. Mind you not all batteries can be brought back but two of the five I have were restored and now maintained until I use them next. It is well designed and comes with the accessories one needs to meet most hook up needs. If you have any vehicles that sit unused a lot this is a must have. Boats, Rv's, Quads, PWC's, Planes this is a must have. I use mine in the shop where I have a charging station to keep my batteries. I switch between them with the maintainer. However as a matter of convenience I am purchasing two other's to permanently install on my Boat and Trailer. Thanks Northern for carrying such a good product at a reasonable price."
What is your level of technical expertise? Home Handyman
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Overall Rating:
5
/
5
Great Product!,
July 20, 2009
By cat333
from Houston, Tx.
"I bought this battery charger for my RV. My batteries would not last because it would sit for a month or more without use. Since I bought this charger, I don't have to worry any more. The batteries are fully charged and last much longer before being drained. I recommend this to anyone who has an RV or boat. You won't regret it."
What is your level of technical expertise? Home Handyman
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Overall Rating:
5
/
5
Just what you need,
July 13, 2009
By Thur
from Atlanta, Georgia
"I have severial motocycles and this charger is just what I needed to maintain the batteries year around."
What is your level of technical expertise? Professional
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Overall Rating:
5
/
5
Great Battery Charger,
November 18, 2008
By Pressured
from Hudson, NC
"I like the size the the status indicators on this charger. It instantly can tell you the condition of the battery. It also won't throw sparks if you accidentally touch the leads together. It is easy to use once you read the owners manual. I like the fact that it has 3 settings 2, 4, and 8 Amps to either slowly or quickly charge a battery and then it goes to maintenance. It won't overcharge so I don't have to remember to go out to the garage and disconnect it from my battery. The extra lead is a nice touch for those batteries that are a little difficult to get to (such as under the seat of my ATV). You can purchase additional one for other equipment you might need to charge the battery on. On the first battery I charged, I took the caps off of it to inspect the cells. It had the white sulphate on the plates. After 3 days or the charger on it, you could tell a difference. Not totally gone but less. I plan on putting it back on there when I park the car again to see if it all goes away."
What is your level of technical expertise? Home Handyman
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Overall Rating:
5
/
5
batteryminder,
November 17, 2008
By jwalt
from colo. spgs.,co
"works great! Restores batterys to proper usefulness.Good price for what you get.much better than old style chargers."
What is your level of technical expertise? Professional
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Overall Rating:
5
/
5
Works as advertised,
August 18, 2008
By fecampbe
from Albuquerque, NM
"I have several older deep cycle batteries left over from my boat trolling motor and RV. I figured I'd keep them around to use as a trade in on new batteries as necessary. I loaned my battery charger to my son and he forgot to return it so I bought this one. When used according to directions, it ACTUALLY brought back the two batteries I had to a useful level. I was amazed!! This is a great product and has already paid for itself in the short time I have owned it."
What is your level of technical expertise? Home Handyman
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Overall Rating:
4
/
5
Battery Minder charger #12248,
August 11, 2008
By yudamann
from Outer Banks of NC
"I purchased this unit to charge the chassis batteries on my motor home, dual 12 volt type. I permanently mounted the unit and plug into a GFCI outlet on board in a storage bay adjacent to my battery bay. The instructions were clear, but quite involved. This is not a plug-and-play charger though it could be used as such; it is intended to do full, maintenance [trickle] or desulphuration charging of batteries to keep them fully charged and extend their life. In order to do this the existing charge level must be determined. Then, a slow full charge must be done, including removing any sulphur on the battery plates. Then the maintenance charge level set and kept to keep the batteries charged. It is not rocket science at all, but if you want to charge your batteries correctly and protect your investment in them, this is the product for you. I would rate it even higher than 4 stars, but I have only had it installed about 4 months now and it is premature to evaluate its long term benefit. So far, it has worked perfectly and my batteries are fully charged. I am happy with my purchase."
What is your level of technical expertise? Home Handyman
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Overall Rating:
5
/
5
battery minder/charger,
August 11, 2008
By userRod
from kansas
"BatteryMinder Battery Charger / Maintainer with Desulphator — 12 Volt 2/4/8 Amp, Model# 12248 seems to do what it is supposed to do....I have had it on a back up 12V sump pump for over a month and the water level in the marine deep cycle battery is not low like some chargers which overcharge batteries tend to do...
I have already recommended this to a friend who has purchased this same item...."
I have already recommended this to a friend who has purchased this same item...."
What is your level of technical expertise? Home Handyman
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Overall Rating:
4
/
5
battery charger,
August 11, 2008
By lockdoc
from Northwest Indiana
"My shop makes keys for cars and trucks that have been purchased at auctions or repossessed. Often the newer cars that have transponder security systems come in with no batteries or dead batteries. It's important to have a fully charged battery to program these keys to these vehicles. We try to keep at least 2 charged batteries on hand at all times. The problem we were having was we don't have someone to check the chargers all the time resulting in ruined batteries. The BatteryMinder solved that problem for us, as it goes into float mode as soon as the battery reaches it charged state. It also was able to bring a gel pack battery back from the dead that we were getting ready to send to the recycler. Instructions are simple and direct. The only thing I would change, that seems to be a problem with these small units, the clamps for the battery terminals could use a little more clamping force for better contact."
What is your level of technical expertise? Professional
1 of 1 people found this review helpful.
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What's Included with this Item?
- (1) Charger/maintainer
- (1) Battery clip set
- (1) Ring terminal assembly
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Manufacturer Warranty: 5 years
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