Top critical review
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Started my Honda and Volvo! - but doesn't last longer than 2 to 3 years!
on December 16, 2012
I charged-up the unit when it arrived. It did become slightly warm to the touch, but it did not get hot at all.
When my 2007 Honda CRV's car battery was sufficiently discharged to a level when the car would not start, I followed the instructions on the unit's 12V cable tag.
You have to remember to turn the ignition key, maybe to the "1st click" position. Some cars like the CRV, do not provide power to the 12-volt socket, until the key is at the "1st click" position. Only then will there be a connection from the 12-volt socket, directly into the car battery that you want to boost.
Remember also to switch-off all other car appliances like radios, lights, ventilation fans, etc. This would allow the booster to supply as much of its energy, into your car battery, and not have the booster's energy wasted on powering your car's appliances.
After about 15 minutes being plugged-in and attached to my vehicle's 12V outlet, the booster's display screen indicated that I should now attempt starting-up the car. I tried it and it started-up successfully!
The next month, my 2001 Volvo V70 station wagon's battery was now sufficiently discharged that it would not start the engine.
This time the unit took the maximum 30 minutes to boost the Volvo's battery. I guess the Volvo has a larger but older battery as compared to the CRV. But the engine was able to start-up too.
I am no expert on car batteries and boosting, but it seems to me that this unit is not half bad!
UPDATE (July 22, 2013) :
The performance of the unit is still good.
Tested again on my Honda CRV.
After the usual running-down of the car battery, I proceeded to boost. This time I tried something different. Before the unit indicated that I could start, I tried to start the car. It was able to start!
However, this was just an experiment. In a real world situation, I would strongly advise that you start-up your vehicle, ONLY AFTER the unit indicates for you to do so.
It is also recommended to give the Stanley Battery Booster, a full charge, every month or so. I noticed a drop of 1 bar, on the 4-bar battery strength indicator of the unit, after storing for about 2 to 3 months.
UPDATE (May 30, 2014) :
Found out the hard way that the 4-bar battery strength indicator is not accurate.
I had neglected to charge the Stanley Battery Booster for about 6 months or so. Because everytime I checked, it always had 3 or 4 bars, showing almost "Full-Charge". Never seemed to drop much, if at all.
This one time I needed a boost, the Stanley Battery Booster worked for just - a minute or two.
Then it went straight to "no-bars" and immediately stopped boosting. The car battery was still not boosted enough to start the car. Luckily, a friend was nearby and gave us a jump-start.
Later that night, I charged the Stanley Battery Booster. Next day I depleted my car battery, then tested the booster. This time it was able to start the car, and with juice to spare.
Lesson learned : Don't depend on the 4-bar battery strength indicator of the Stanley Battery Booster.
Always keep it charged-up, every month or so.
Before any important road trip, charge it up a day or two before, if possible.
Update (June 16, 2015) :
I think the battery deteriorates very quickly after 2 years or so.
The last few days, have been trying to recharge the Stanley Battery Booster - without much success. The battery strength indicator struggles to move up from 2 bars - to 3 bars - no matter how long I leave it charging. It can no longer reach the full charge of 4-bars.
The new maximum of 3-bars does not allow it to boost. When I connected the device to the car to try to boost, the device stopped boosting almost immediately. This shows that there is almost no charge left in the internal 6-cell lithium battery.
The device lasted only a little over 2 years, which is not acceptable.