Schumacher DSR 108 DSR ProSeries Batteryless Jump Starter - 12V, 450A for Gas and Diesel Engines

My car's battery was losing charge as winter progressed to the point where it would barely start the car.With only street parking available it wasn't practical to run a mains charger to charge the battery.Then the last wave of cold and snow snuffed it out completely and the car wouldn't start.So my option was to buy a new battery and go through the hassle of installing it or try a jump starter.After doing some research the Schumacher seemed worth a try versus lithium battery based units.Anyway it comes via Amazon US and took just over a week to arrive, which wasn't too bad since I wasn't in a hurry.The instructions are reasonably clear, although for my 330i with the battery in the boot the best place to connect terminals was actually points in the engine bay.The battery had enough juice left to charge the Schumacher unit and then the car started after just a few minutes of operation. Very straight forward really.So is it worth it?It's expensive and you could buy a brand new replacement battery for far less (but you do need to install it).On the other hand the Schumacher unit works and it can potentially save you some real hassle when you are isolated and just need to get the car started.

Excellent