BatteryMINDer Maintainer/Desulfater - 2 Amps for 48V Systems, Model# 48021

Shipping was fast. Got this thing all hooked up to my golf cart. Seems to be working fine. technical support with the battery minder guys is supreme. I have called 3 times and talked to someone every time. Very knowledgeable and courteous people. I will update on the performance of the battery minder once it's had a chance to work it's magic on my 4 year old 8 volt batteries.update 2-16-14.... for my 4 yr old 8 volt T-890 trojan batteries. it took a lil under 2 weeks to get these batteries to float. starting out on a full charge from the bulk charger and a resting period, 4 batteries volt level around 8.1 to 8.3, the two leed batteries were 7.0 and 7.2. after coming to float mode, 4 batteries at 9. 2 to 9.4 and the other two at 8 .7. u can plainly see the difference that the battery minder has made in the plates in under two weeks.Update: 2-21-14 after a week of being on float all the batteries have leveled out.the voltage on all batteries @ 8.8 to 8.9. in my opion this battery minder has already paid for its self.my intent is to get 2 to 3 more years out of these batteries and i think i will.last update 3-24-14When I started this process my battery pack as a whole was at around 47 volts. The fact that my batteries were in decline was evident. My run time had fell off dramatically. I was under the impression as is I would imagine a lot of the golf cart owners are, that my bulk charger was doing the job it was supposed to be doing, keeping my batteries fully charged. IT WASN'T. I must admit this was somewhat of a surprise and there was a bit of a learning curve but I will tell you that since I have had this batteryminder hooked up to my golf cart I have seen a noticeable improvement in my 4 yr old Trojan t-890's. My battery pack as a whole is floating at 53.7 volts most of the battery cells are sulfate crystal free. Had one cell in one battery that was weak. It has came back and all this has happened in the short time i have had this thing hooked up. I could kick myself for not having this sooner. It is in my non professional opinion that this thing is a no brainer and a must have for golf cart owners. If u have a golf cart and u don't have this batteryminder you are overpaying ur golf cart mechanic to replace ur batteries when u shouldn't. Spend the 200+ dollars and save urself thousands.Update. 10/23/14After having this battery minder for almost a year I can tell u that my batteries in my cart are completely sulfate freeI have noticed a huge improvement in the overall health of my batteries. Ie: run time and the length of run time. I very rarely hook my big charger up any more unless I work my cart fairly hard. 99.9% of the time I hook the battery minder up and 24 hrs later its charged.As I have said previously in this review. If u own a golf cart and u don't own a battery minder ur in effect throwing your money away.

I love this product. I have been using it for about three months. I use my golf cart daily and have not used my golf cart charger since I purchased the BatteryMINDer. I plug the BatteryMINDer in every time I park and it supplies a perfect 1.5 Amp trickle charge while keeping the plates in my batteries desulfied. The batteries are much stronger and the charge last much longer than it did before using the BatteryMINDer. Before purchasing the BatteryMINDer the charge was lasting about an hour. I was faced with having to buy four new expensive batteries. I decided to invest in the BatteryMINDer instead. It was an expensive gamble but man am I glad I did. The batteries are now performing like new. The BatteryMINDer came with a female plug built into a small one inch mounting plate that could easily be installed by drilling a small hole through the fiberglass and permanently wired into the first and last battery. This allowed me to easily hook up and disconnect the charger. The trickle charge is low enough that it doesn't heat up the batteries therfore the water in the batteries does not boil out and the life of the batteries is not diminished. Charging is normally what reduces the life of a battery but with the BatteryMINDer instead of reducing the life it is cleaning and maintaining the batteries. I love the BatteryMINDer, what a great investment.

This charger has really extended the life of the batteries in my 48v golf cart. I thought it was time to replace the batteries about 6 months ago, and I read about this unit. It works! IT WORKS! I am an electrical engineer and I am usually skeptical about this type of thing. But, the reviews were so good I decided to give it a try. It took a couple of discharge/recharge cycles before I could tell a difference. But it really did extend the life of my batteries. Now, here is the best part: I sometimes leave the cart for several weeks without it being used. The manufacturer says not to leave it connected to the charger that came with the cart, because it could overcharge the batteries, evaporate the water from the batteries, and even cause a fire. Therefore, I came back to dead batteries several times. Not any more. This unit is safe to leave hooked up while I'm gone.

Performing as expected. With one minor thing. It is telling me my polarity was wrong. Checked my connections and they were correct so don't know if this thing was wired wrong at the factory. Swapped the connections and it is doing what it is supposed to. Like the added permanent mount for the charging harness, fits right into existing hole in my Yamaha golf cart. Batteries seem to be performing well but just recently replaced them so only time will tell if this charger helps extend the life (got over 4 years on the last set).

I use this for our Club Car and have been very pleased with it. The battery life of the cart has improved noticeably and being in law enforcement and used battery conditioners for over 10 years, I see the life of batteries and their charge capacity decay significantly slower using them.The batteries I used these on were about 2 years old and I saw the charge depleting within about 2 hours. After cycling twice through the reconditioning I was getting closer to 3 1/2 hours. Recommended

Not very pleased. Hooked it up to my 2012 Yamaha golf cart which already had good strong batteries hoping to preserve them. We keep this cart at our beach house and it will sit for months at a time on a charger. First time we left it hooked up for 3 weeks and went down and the cart stranded my daughter due to the batteries not being fully charged. We hooked up the Yamaha charger and let it fully charge overnight and my batteries were good as new. Not sure I really trust this charger to fully charge my batteries. My chemical engineer Dad told me I was wasting my money when I bought this thing and I'm afraid he may be right.

The unit works well, but needs your bulk charger to be used together with it. This is opposite of the the online instructions.