Review on Power Up Your Devices With TalentCell 24V Lithium Ion Battery Pack - Rechargeable 42980MAh With Multiple Outputs by Onsommoshit Mathews

Spent a lot of time trying to find a backup for internet since we loose power often. We have a router and a modem. Both work off 12 volts DC. Yes they normally plug into mains voltage but that little block converts AC house current to DC. I have a typical computer backup but that is designed to use the battery to make AC. So it’s great for spikes or brownouts but as a backup for DC it was limited to 20 minutes since it was taking the battery (DC), converting it to AC and then back to DC. Not efficient.This guy solved the problem.While I am sure other models might work, by getting this 24 volt model I was able to keep a full 12 volts for quite a while. In other words, as the batteries drain they put out a little less than 12 volts until, while your equipment may stay on, it is starved, maybe only getting 10 volts, to the point it shuts off. With 24 volts you get more of a constant 12, less drop off.It was also confusing to take the plunge and order since the modem and router use very little watts but need a couple amps — like pressure when you put your thumb over a garden hose — not a lot of water but comes out fast. Again, this guy did the trick.So did a little test. Fully charged the unit, over night. Put the router on it and waited to see how long it stayed on. To be clear, no load. Meaning I wasn’t streaming Netflix. However, got over 30 hours. That’s a Deco X60.So bought another for the Linksys modem. Got 24 hours plus before the power was restored. Guess that was a real life test.Yes, this review isn’t scientific or mathematical. And no, not an engineer but I am writing the long review hoping it helps.