Reviews of Stanley BC6809 6/8 Amp Automatic Battery Charger

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List Price: $41.99
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This is a great little charger, it's light, energy efficient, inexpensive and does the job of a much larger at a reasonable price. I have used this unit to charge a large automotive truck battery and it completely charged it within 5 hours. I also used this unit to charge one of my little sealed lead acid battery packs for a 2 amp trickle charge. I haven't yet had the opportunity to use the 8 amp engine start feature, but I am sure it won't dissapoint thanks to it having the build quality and reliability of the stanley name.

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I bought this Stanley battery charger after buying one of their jump starters and this thing is just as good as their jumper. It is super easy to use. All I had to do was hook it up to my battery, plug it in the wall socket and push the button to start charging. I didn't have to select my battery type or anything. This Stanley automotive stuff is awesome!

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I bought this to keep my batteries at full charge. In the automatic float mode you don't have to worry about over charging the battery. IT WILL NOT CHARGE A COMPLETELY DEAD BATTERY!...THE BATTERY CAN NOT BE DOWN BELOW 2 VOLTS! At 2 volts and above the charger charges the battery just fine and then kicks into auto float mode once the battery is at full charge. It's light weight and has a nice easy to read digital screen. Comes with a removable stand and has the alligator clamp leads along with the adapter to plug into the cigarette lighter for easy jump starting the vehicle or just charging the battery. For the money it's a good little charger, does just what I need it to do. I recommend this product.

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works real well charging my 12 volt motorcycle battery. Has enough amps and volts. Very user friendly. I would recommend it for similar uses

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I tested the Stanley BC6809 with my sealed agm Optima and Odyssey batteries and they did well.

During absorb, the voltage will eventually reach 14.55 volts, and then will float at 13.55 volts as measured on a Fluke 87V multimeter. 14.55 volts is ok for pure-lead types like the optima or odyssey, although they prefer a little higher at 14.7v in cyclic use, but still this is very usable. 14.5 volts may be just a tad higher than what lead-calcium agm's prefer such as East-Penn/Deka agm batteries which want to see no more than 14.40 volts, but still this middle of the road absorb voltage is very usable to me.

Critically, the 13.55 float voltage is great and meets Odyssey's float specification of using between 13.5 and 13.8 volts. Part of the reason is due to the "walking down" of capacity if using a float voltage lower than 13.5 volts, some of it due to grid-corrosion using less than 13.5 volts long term.

Note that this charger is not on Odyssey's officially approved list, but the specs and operation make it nice for PC680's and lower model capacity. For larger Odyssey capacities, this makes a good maintainer since it has enough oomph behind it with 6amps charge, and critically the 13.55 volt float. Still, deep discharge of an Odyssey wants 0.4C current recharge, so the difference between charger and maintainer should be kept in mind depending on the battery model.

My Optimas have a little less stringent charging specs, and the BC6809 did a fine job on my yellow-top Optima D51's.

My unit came with a removable drop-in cradle to hold the charger upright, although I feel that the charger ran cooler when it was laid down on a flat-surface since there are no vents on the top or bottom. This unit runs a bit hot (but silent) since it has no fan, but uses plenty of cooling slots all around it. Therefore I would be careful not to lay it down on a floormat or car seat if using it inside a vehicle and in this case, the cradle would then become useful. Once it starts to maintain with a float voltage, it cools down.

It put out a little bit of broadband rf-hash over the 2-30 mhz radio spectrum during charge, and I wish it was as quiet rf-wise as it's bigger 15 amp brother. But once it goes into float-mode, it is quieter across the spectrum, although not as quiet as the smaller Stanley BC209.

All the indications are on an LCD display and spelled out as to what mode you are in. There are no buttons to push, nor any led's. This really makes it a great gift for someone who is not into battery care, and might get settings or readings wrong with more complicated units.

Like any new charger, common sense should prevail if it never drops to float mode, then you have very large parasitic drains or other issues that should be looked at. However, since this is beefier at 6amps charge, you may get away with larger parasitic drains as compared to smaller tenders.

Overall I think this is a good value charger especially for it's price range and specifications.