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

Skoda Kodiaq

Skoda Kodiaq

RRP £39,025Avg. savings £3,528 off RRP*Used from £9,444
Kia Sportage

Kia Sportage

RRP £28,065Avg. savings £3,330 off RRP*Used from £14,200
Renault Clio

Renault Clio

RRP £16,160Avg. savings £3,374 off RRP*Used from £7,295
Omoda 5

Omoda 5

RRP £23,990Avg. savings £1,535 off RRP*
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Insurers still refuse to cover some Chinese cars despite booming sales
Skywell BE11 - front action

Insurers still refuse to cover some Chinese cars despite booming sales

Insurance companies seem to be struggling to keep pace with the wave of new cars coming from China, and buyers are literally paying the price
News
26 Feb 2026
New Land Rover Defender Sport: baby SUV will be boxy and electric
New baby Land Rover Defender render - watermarked

New Land Rover Defender Sport: baby SUV will be boxy and electric

The new Land Rover Defender Sport will sit below the existing Defender in both size and price, and our exclusive image previews how it could look
News
23 Feb 2026
Car Deal of the Day: Top-selling Ford Puma for a rock-bottom £166 a month
Ford Puma - front corner left turn

Car Deal of the Day: Top-selling Ford Puma for a rock-bottom £166 a month

It’s been a while since the petrol Puma has been cheaper than its electric sister. It’s our Deal of the Day for 24 February.
News
24 Feb 2026