A great battery maintainer to keep Concorde sealed batteries in good condition. Love the desultification feature.

My Batteryminder started giving me erroneous indications. I called the company and spoke to Wayne. I described my problems, and he said I am sending you two circuit boards, install the one that fits, and throw the other one away. They arrived in a few days, I installed the proper board and the problems were solved. What a great company!

Is what I was looking for, works fine. True value will take a lot longer to assess.

I have a concord rg25xc battery. The plane sat in annual for almost a month and then would not start during the maint run. Then it would not start during the test flight. Hmmm, must be a bad battery. Wait... the battery is only 1 1/2 years old and checked good at the beginning of the annual. A voltage check showed 12.5 volts after flying, so I decided to have the proper charger used. Wow what a difference, after about a week, the battery shows 12.91 volts and starts easily. Sounds like if you have an airplane you need to charge your battery to keep it up and extend the life of the battery. Long term we shall see, but for now I recommend the appropriate charger for your airplane.

Quality product that I have used before. Makes it easy to charge and maintain a 12V Concorde battery.

My 2 1/2 year old Concord battery had become weak since it was getting cycled enough. After a week of desulfating on the battery minder it made a huge difference. I should have bought this 2 years ago.

I use this unit to charge and maintain my aircrafts Concord RG-25 battery and it works like a charm. So far the performance has been awesome - highly recommended.

Seems to be pulsing new life into my elderly Concorde battery I was beginning to neglect.

very satisfactory

Product works as described. Harness installation was quick and makes charger much more simple and easy to use.

This battery charger is a great asset for aircraft owner, it made specially for model of battery installed in your aircraft, and it performs as advertised, it will keep your battery in top sharp for a long time and saved your money too.

Works great. Was using a regular battery minder but battery seemed to be weak starting my warrrior. After a few days on the new charger it starts right up.

Dealing with smokey ash filled air and CV-19, going to finally commit aviation and realizing that the battery is too low to spin the prop is solved by this excellent appliance. Its easy to use, easy to connect and disconnect and keeps the battery healthy. Money well spent.

These things really work. Just keeping infrequently used batteries fully charged (NOT overcharged) seems to double their life. I say this from 40 years experience with Street Rods and motorcycles and their usage patterns of sitting for long periods between use. When I started using a battery maintainer the battery life easily doubled. Recently my motorcycle battery minder on the MC was accidentally unplugged over the winter... it was drained so low not even a light bulb would light! After trying to to recharge it with a standard higher amperage charger to get some life back into it, it was still not charging. I figured it was badley sulfated and ready for the recycler. But what the heck I tried the battery minder to see what it might do, this thing was toast so all I had to lose was a little electricity. After 4+ weeks the green light popped on on the batt minder! The desulphating had been reversed from totally unusable to waht acted like a normal battery. I used it for another two years for a total of 6 years before was replaced.

A well known product that works well with my Concorde battery. Ordered as a replacement for a 10 year old Batteryminder that had a failure after many years of almost constant use.

Excellent product and shipping to Australia Wass very fast. My only little complaint is that the Minder doesn’t have a switching power supply (for 240 VAC countries) so I’ve needed to use a step down transformer.

Easy to use and has kept the battery fully charged between flights .. it indicates the conditioner is operating, but the unit was installed on a new battery so will take a little time to tell how it performs overall. Compact and easy to connect.

Aircraft Spruce didnt make the charger, so my comments relate to order, which was quick and easy, and delivery, which was faster than expected. Overall I was pleased (once again) to do business with Aircraft Spruce.

Batteryminder arrived on time. It was easy to setup and start charging my battery.

Charger arrived on time and it was very simple to setup and connect to AC battery. Very pleased

Battery life is essential and from all my research this is the best tender/charger available. Easy to use, especially when paired with a battery terminal ring kit and temp sensor.

So far so good? Time will tell.

It does exactly what its supposed to do.

It works perfectly.

Got the charger to bring back an almost completely dead Concord Battery. Worked great! Took about a 24 hours to get it fully charged and now it is doing maintenance. Will order the connector adapter since it is difficult to get to the battery.

Recommended to me by my battery manufacturer while diagnosing battery issues. Learned a lot from him and realized I was doing everything wrong for my battery. It’s solved my low battery issues. Units are specific to battery types. Be careful ordering on line - it’s easy to order the wrong one. I recommend calling and tell the customer service rep what type battery you have when ordering.

Just what I needed Works great. Thanks�

Im firm believer in the quality and durability of Concorde batteries as I have used them for years. Aside from the reliability Ive never had an acid leakage issue like I had with the other brand. I just bought the S5 BatteryMinder for my 172. Still using a generator sometimes with pattern flying and lighting use the battery gets a little low. The BatteryMinder is magic. While a little pricey, it is a wonderful unit. I have many Battery Tender Inc. units for my automotive type batteries. Im very happy with their products too, although not usable for these batteries. The diagnostic and desulfating capability of the BatteryMinder is impressive and worth the money.

I bought this with a Concorde battery and have been using them together for a month now. The Concorde batter is top notch, but this Batteryminder is keeping it nicely topped off, even in the 100 plus degree days of summer in Dallas. Which makes my 1967 B33 start like a champ. I think this is the beginnng of a beautiful friendship.

Good product easy to set up and use delivery through Aircraft Spruce was efficient and as promised.

Have 2 for Concord batteries (as mentioned in another review recommended by Concord Tech reps) and 1 for Odyssey batteries. Havent had to replace any of the batteries that were 90% capacity or better when I started. All the batteries are still aver 85% after 5 years.

We switched to the Concord batteries and havent got the life we expected out of them. Concord suggested using the battery minder since most of the flights are around 30 minutes. We will find out a year from now.