Skip advert
Advertisement

Battery conditioners

If you have a second car that rarely gets used, a trickle charger is ideal for maintaining the battery's power. We put six to the test

Flat batteries are the bane of owning a classic car or infrequently used second motor. Leave the vehicle idle for a few weeks, and just when you need it there's the dreaded click as you turn the key.

The solution is to keep the battery topped up with a trickle charger, ensuring immobilisers and the like won't run it down while the car sits in the garage. There's a wide choice on the market, but which leads the charge for top honours?

Verdict

At £50, the CTEK 36 is the most expensive product on test, but it combines three charging modes in a unit that can work as a reviver and a conditioner.
The Accumate and Airflow performed well, with the former narrowly securing second position - although these chargers are more geared to conditioning only.

Skip advert
Advertisement

New & used car deals

Volkswagen Golf

Volkswagen Golf

RRP £25,250Avg. savings £2,419 off RRP*Used from £8,995
Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £5,624 off RRP*Used from £12,124
Kia Sportage

Kia Sportage

RRP £28,085Avg. savings £3,239 off RRP*Used from £13,500
MG MG4

MG MG4

RRP £27,005Avg. savings £6,250 off RRP*Used from £11,000
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Citroen Berlingo MPV aims to be the perfect SUV antidote
Citroen Berlingo - watermarked

New Citroen Berlingo MPV aims to be the perfect SUV antidote

The new Citroen Berlingo will be simple, spacious and stylish, and our exclusive image previews how it could look
News
15 Jun 2026
New Cupra Formentor VZ5 boasts Audi RS 3 five-cylinder power
Cupra Formentor VZ5 - front

New Cupra Formentor VZ5 boasts Audi RS 3 five-cylinder power

Cupra’s sporty crossover SUV is now available with a 385bhp five-cylinder engine, just for kicks
News
15 Jun 2026
Dacia Sandero Stepway vs Fiat Grande Panda: cheap 'n' rugged small cars do battle
Dacia Sandero Stepway vs Fiat Grande Panda - front end

Dacia Sandero Stepway vs Fiat Grande Panda: cheap 'n' rugged small cars do battle

Hybrid version of Fiat’s Grande Panda takes on Dacia’s SUV-styled Sandero Stepway in our budget small car test
Car group tests
13 Jun 2026