The charger will only start when the charging process has been selected. There are 4 Modes, the first is for 6v batteries, Mode 2 is for small 12v wet batteries, Mode 3 is for larger 12v wet batteries and Mode 4 is for AGMs. Whichever is selected will result in a red light to confirm the selection in the top row of lights and a red light in the lower row to show that charging is taking place.

The important plus point for me is that this charger claims to work on various battery types including AGMs which are what I have for leisure batteries. This review is not meant as a technical lesson into battery technology but I have become aware that different battery types require different charging processes. The onboard charger on my motorhome (and very many others) does not specifically cater for AGMs - there are just switchable settings between wet and GEL batteries. Selecting either of these will not give the right process for AGMs and there are conflicting reports from different trade sources as to which is the nearest compromise. Includes 12V adaptor, jump starter cable and 3 way USB charging cable for mobile phones and tablets with micro USB / mini USB / or USB-C connectionIt claims to be 'intelligent microprocessor controlled' and has a 'diagnostics programme and controlled charging process'. So, with this charger there is at least an opportunity to charge my leisure batteries properly and fully whenever convenient. Thanks Tigger and Novo you may have saved me the cost of a new 110ah battery and definitely a new charger:D . Only use the charger for recharging and maintaining the charge of 6V/12V lead-acid batteries. Do not recharge frozen batteries. Make sure there is no possibility of ignition of explosive or flammable substances, such as petrol or solvents, during charger operation.

I was a very early fan of the smart chargers, using a Gunson transformer-type, as the full-time power supply for the 12v battery in our original Ace which had no 240V mains as standard, from '82-01 a period of 17 years allowing a car battery to function as a leisure battery and still get 10+ years life from the two batteries used.Very happy with the CTEK and even though it cost more, it has a 5 year guarantee. It looks similar to the LIDL one but actually works, which is nice. Also says you can connect it while the battery is connected to the car. The LIDL manual says you have to disconnect the car terminals which can be problematic if you don't know your radio code. The MXS 5.0 also includes battery diagnosis to establish whether your battery can receive and retain a charge, patented automatic desulphation program, an AGM option which maximizes the performance life of most Stop/Start batteries and a special Recondition mode for reconditioning deeply discharged batteries. The MXS 5.0 uses CTEK’s patented float/pulse system, which is the most efficient maintenance mode when a battery is connected for long periods. Features & Benefits: Your car probably has a stop start battery, these are constructed differently to normal batteries, I'm on my second car now with these new type batteries, and according to my dealer require a special expensive charger to fully charge them, how true that is I'm not sure, but I do know the dealer charger charges at around 17 volts. Do not place the charger near fire, heat, or locations with prolonged exposure to temperatures above 50°C. OK, so I admit to impulse buying occasionally when wandering around the 'specials' in Lidl and Aldi. This multi-stage battery charger was the result of one such browse.