Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer

• 6-volt and 12-volt battery charger; automatically changes from full-charge to float-mode monitoring to prevent overcharging
• Ideal for keeping batteries charged while in storage
• Rugged plastic housing
• Includes charger, jump cables, ring connectors
• 7.1 by 10.5 by 5.9 inches; 5 pounds; 1-year limited warranty

After having the battery on my "summer only" convertible go

flat last winter I decided to invest in a battery maintainer.

The Schumacher SEM-1652A was the best compromise of price (around

$40 with shipping), features (a normal charging rate, and a

lower maintaining rate, with overcharge protection and indicator

lights), and small size (fits easily under the hood by the

master cylinder, battery wiring adaptor with quick connect makes installation and removal a snap.

I'd add a few extra crimp-on terminals of various ring sizes to the kit,

so different power connections with the wiring adaptor could be made

(my car has the battery mounted in the front fender well, I had to get

larger ring terminals to go on the remote jump starting terminals

under the hood.

Update: I bought a wattmeter to measure the power use of a fridge ( seemed to be running more than

normal, we replaced it with an energy star rated model ) so I hooked up the Schumacher maintainer

to the meter to see what it drew when it was trickle charging / maintaining. Charging was .25 amps or about

30 watts per hour, and maintaining was .11 amps or about 13 watts per hour. Pretty low energy use in my book.

Buy Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer Now

This is a great charger but the same company (schumacher's battery maintainer), makes an identical product for sears, branded as diehard.

It costs the same as on amazon but comes with a 3 year warranty, not the standard 1 yr. warranty found here. Plus you don't have to deal with shipping hassles when you can just go to your local sears and pick one up or exchange if you have problems.

Read Best Reviews of Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer Here

Bought this charger to charge/maintain my deep cycle battery used for emergency power outages. The manual included with this charger even describes it charging deep cycle batteries and gives a charging estimate of ~36hrs. Fine for what I'm looking for. The charger repeatedly aborted the charge on my brand-new battery. Their customer service tech said it wasn't meant to charge deep cycle batteries due to the higher internal resistance. This should have been made more clear in the packaging, labelling and product description. I've lost time and money. Now I have to go buy a 'real' charger...

Update The charger was actually DOA. I returned it and replaced the charger with a new one on an auto-shop recommendation. It is working fine. Schumacher didn't want to own up to a bum charger when I called them earlier.

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Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer

Well worth the price...does exactly what it is suppose to do.

(Update) After using this charger less than 5 mos. to maintain my R.V., which is seldom driven, I have found that, because of the charger failing to cycle back to the charge mode properly, the battery that it was hooked to was stone dead. Now, I'll do some research to find out the annoying process of returning the charger for warranty.

(Update) I have contacted the manufacturer, Schumacher, concerning the failure of this charger but after 3 weeks, have received no response and it doesn't look like I am going to. So, I guess I'll just take the loss of making a bad choice and trash it. BTW, I am using two Chicago Electric on Board chargers, one on my Jeep and the other on my Mercury Sable. Both are giving very good service and are less expensive than the Schumacher or the Battery Tender.

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Very good item for charging and maintaining batteries. Have used on my motorcycle and car batteries, as well as my lawn mower battery. Works well and actually tells you when the battery is fully charged, which is one of the best features of this charger