Best Stanley BC209 Battery Maintainer Deals

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List Price: $29.95
Sale Price: $18.89
Today's Bonus: 37% Off

I am using this as a battery maintainer. Seems to work fine. It is a higher quality case and wiring than the Schumacher units I had used in the past. These are a buy again.

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This appears to me to be the same BC209 as the more expensive all yellow version. This one is advertised as a maintainer but the directions and box refer to it as a maintainer/charger just like the yellow version. The paperwork is dated 2011 so it is a up to date model. I bought this to maintain my starting battery in my motor home while in storage which is most of the time. The "house" charger in the motor home only maintains the house battery (not the starting battery)so I was going through starting batteries way too fast from lack of use. The charger does exactly what I wanted which is slow charge then maintain the battery level. The included plug adapters are all nice quality. I chose to use the cigarette lighter adapter and it works great. The light indicates when it is charging and when it is charged. The unit runs without making any noise at all. I actually put my ear to the box and could barely hear a slight hum. From 1 inch away you can't hear a thing! Also there is no odor from the unit either. I could not be happier and highly recommend this product. Now when it is time to travel I can just start her up and go!

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This charger works as good or better than chargers costing 5 times more. I bought 3 of them to use during the winter. Great value!

Honest reviews on Stanley BC209 Battery Maintainer

It is everything that promises. reliable and fast. nice product. works with my cars and motor cycle. good product for the money.

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One of the things I look for in a charger / maintainer are voltages close to the battery manufacturer's specifications. I picked up two of the recent-model BC209's (yellow and black plastic with only one indicator light) and was pleased to find that the voltages on my agm batteries with the bc209 was 14.68 volts absorb, and 13.65 volts float as measured on a Fluke 87V multimeter.

I'm using both Odyssey and Optima agm's, and these voltages are a nice match for these manufacturers specs for maintaining. I do NOT use them for charging large batteries that have been moderately to highly discharged, and leave that duty up to higher-amperage chargers, and switch back to the BC209 when done.

At this price range, I'm not sure if it has temperature compensation, therefore I would not recommend using it long term in temperatures above 85-90 degrees fahrenheit. Fortunately, it is very quiet in the radio spectrum, and doesn't generate a lot of rf-hash.

Note that I am only using these outside the vehicle with no parasitic drain. As mentioned in the manual, with a large parasitic drain, this charger may not be able to maintain that is, it will never drop to float and that is not good for the battery to stay in absorb forever. So be wise and if it never drops to float, (steady green light indicates float) then you have other issues that need to be looked at.

Overall I'm very pleased with my BC209's as maintainer / top-off charger in this price-range for my optima and odyssey agm's.