Review of Ring RCB212 Car Battery Charger

This is a review of the Ring RCB212 12A Car Battery Charger, we look at how well it fits its purpose for your car needs.


When it comes to a good old fashion charger that simply does what it says on the tin, the Ring RCB212 aims to tick that box.

Ring RCB212, 12A Battery Charger Box


The RCB212 is a strong, sturdy battery charger and I have to say that it isn’t as big as I thought it would be. It comes with full instructions and if you accidentally lose those there are more instructions printed on the charger itself and we have included the manual pdf on this page. The charger has a large carry handle making it easy to whip out of the boot of your car and the crocodile clip leads are neatly stowed away to one side of the charger. The length of the leads are pretty long as car charger batteries go.

Ring RCB212, 12A Battery Charger Tidy


We tried the RCB212 with our car battery, which we found very easy to  use. Firstly you need to connect the crocodile clips to the battery terminal points before you plug the charger into the mains, it is important to do it that way round rather than plug into the mains first as the charger will automatically come on. Also make sure to check the manufacturers recommended guidelines for your car model. What is great about this charger is it is very versatile and can be used for a variety of battery types not just your car, so if you are an outdoor enthusiast who also has a boat, campervan and a jetski this will also work for different battery types.

Ring RCB212, 12A Battery Charger Set Up

There is a slow and fast rate option to which you can choose dependent to the time scale you have. If you have put the clips on the wrong way round there is an LED that will lite up to tell you Once plugged in and charging the RCB212 will light up the LED that points out its charging happily away, leave it for a little while it should then change to the LED lite up that says charged. This charger will not overcharge and will automatically switch to maintenance mode once fully charged. What I did notice though is that it does get very hot and as the outer casing is plastic I would not leave it for a long period of time, instead monitor it till it says charged and then disconnect the clips and turn off.

Although it doesn’t have a jump start feature, it’s a great car battery charger which will take your car battery from empty to full in a matter of hours in a safe manner (if using slow charge).

Pros & Cons

  • Suitable for Cars, Motorbikes, lawnmowers, jetskis, boats
  • Clear LED screen shows your battery level
  • Easy to use
  • Stores away easily
  • Comes with polarity protection
  • If you loose the instructions there is a sticker on the side of unit and we’ve included the Ring RCB212 Instructions to download
  • Cable tidy keeps it neatly together
  • Be careful as it can overheat and get quite hot
  • Not the smallest battery charger available

Conclusion & where to buy

If you are simply after a no fuss good standard battery charger at a good price that is easy to use and pack away the Ring RCB212 is for you especially if you have a number of other battery types as well as for your car, just make sure not to leave for a long period to make sure it does not over heat.

Ring RCB212 12V Battery Charger, 12A Charger for Vehicles Up to 3.0L, Charger for Lead Acid and Gel Batteries, Protects Against Overcharging - Grey

5 new from £52.50
Free shipping
as of September 21, 2023 9:22 am


27.6 x 24.8 x 11.8 cm



Adventure-loving mother of two and an auto-enthusiast who thrives in the great outdoors with passion for cars and other self-propelled things.

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