The best portable battery chargers to stop a flat battery ruining your day

A portable battery charger is a handy piece of kit to make sure you're always ready to drive, wherever you are.

A car battery being charged

by Ryan Gilmore |

Car batteries can be counted on to fail at the most inopportune time. Imagine you're about to return home from shopping and your battery simply hasn't got enough juice in it to start your car. Now you're immobile and stuck away from home. Sure, you could put on your charm and see if you can borrow a jump off a stranger or call a breakdown service, but these options are far from ideal.

The best way to avoid this is to buy a portable battery charger. Keep one of these in your car and you'll be able to start your stricken car with ease. We've found the best portable battery boosters so you'll never let a flat battery flatten your day.

If it's a battery charger for conditioning and charging your battery at home that you need, read our article on regular car battery chargers.

What you need to know about portable battery chargers:

What do I need to bear in mind?

Before you buy a booster you should check that it'll work with your engine. The bigger your engine, the more power will be required for it to work. Our picks will cover most new cars meaning you'll have peace of mind with one of these - just make sure to double-check. It's also worth mentioning that some of these boosters will not work with cars fitted with Stop-Start.

What other features should I look for?

Aside from charging your car's battery, there are a number of useful features that you should look for in a portable battery booster. Look and see if it has a torch, most do and it can be invaluable if you're stranded at night.

Also look for USB charging, this'll mean you'll be able to plug your phone in and charge it up, again a great feature if you've broken down and your phone battery is low.

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