6 of 6 people found the following review helpful
Far more efficient than an inverter,
Verified Purchase(What's this?)
This review is from: Pwr+ 65W Laptop Car Charger for HP Pavilion G4 G6 G7 M6; EliteBook 2540p 2570p 2730p 6930p 8440p 8460p Revolve 810 820 840 850 Folio 9470m; HP G42 G56 G60 G61 G62 G71 G72 250; ProBook 450 650 (Electronics)
I have an inverter on my work truck that I use to use to power my laptop. But the truck has a small alternator and when combining powering the lights for a trailer, AC in the summer, radio, and the laptop, the voltage on the battery started to drop (I was taking more juice out than putting into the battery).
When I turn the inverter off and use this instead, that problem goes away. While a laptop doesn't use much power, once you pay for the DC to AC conversion in an inverter and then the AC to DC conversion in the standard laptop adapter, it takes almost double from the car battery as it uses in the actual laptop. I only needed a few 10's of watts to solve the problem and this did it. And for far less than putting LED lights into the trailer would have been.