Adapter for 12 volt DC > 4 volt DC
We use a Jetpack (Verizon internet connection device)in the RV and usually leave it turned on all the time and being recharged by the RV 12 volt system. The Jetpack lithium battery (18 months old) sw...
Forum Discussion
I'm wondering about the safe voltage to supply to the Jetpack. I understand that USB voltage is 5 volts DC, but I wonder if the presence of the Jetpack battery in the circuit lowers that voltage some (the battery is marked 3.8 volts DC). So, if I use a USB power supply - at 5 volts nominal - and do not have a the Jetpack's battery installed - would I supply a harmful voltage to the Jetpack?
My desire to run the Jetpack without an installed battery is that my original Jetpack battery swelled up. I have a replacement battery on order, but I noticed that the OEM batteries that I prefer are not in ready supply (not even from Verizon). So since I usually have the Jetpack connected to the RV DC system, I really don't need a Jetpack with a battery if I can connect it directly to the RV system; and thus eliminate any issue of over-charging the lithium battery.
My desire to run the Jetpack without an installed battery is that my original Jetpack battery swelled up. I have a replacement battery on order, but I noticed that the OEM batteries that I prefer are not in ready supply (not even from Verizon). So since I usually have the Jetpack connected to the RV DC system, I really don't need a Jetpack with a battery if I can connect it directly to the RV system; and thus eliminate any issue of over-charging the lithium battery.
