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 Tiguan

Volkswagen Tiguan

RRP £38,030Avg. savings £3,117 off RRP*Used from £11,327
Nissan Qashqai

Nissan Qashqai

RRP £27,415Avg. savings £6,037 off RRP*Used from £10,222
Omoda 5

Omoda 5

RRP £23,990Avg. savings £1,535 off RRP*
Hyundai Tucson

Hyundai Tucson

RRP £29,820Avg. savings £6,182 off RRP*Used from £12,795
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Ford and Renault EV deal: Fiesta and other new EVs will ‘feel like Fords’
Ford with Renault

Ford and Renault EV deal: Fiesta and other new EVs will ‘feel like Fords’

Renault boss Provost confirms new Ford supermini EV will feel like a Ford, not a rebodied R5
News
19 Feb 2026
It “makes sense” for Geely to build cars in the UK
Geely Starray UK - front action

It “makes sense” for Geely to build cars in the UK

The third-largest Chinese manufacturer could have a new car building home in Britain
News
18 Feb 2026
Skoda Kodiaq Edition X adds extra kit but costs £2,000 less and dodges tax
Skoda Kodiaq Edition X - front 3/4

Skoda Kodiaq Edition X adds extra kit but costs £2,000 less and dodges tax

A new special variant celebrates 10 years of the Kodiaq with new Edition X trim
News
18 Feb 2026