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 £38,050Avg. savings £3,360 off RRP*Used from £11,179
Omoda 5

Omoda 5

RRP £24,040Avg. savings £1,535 off RRP*
Kia Sportage

Kia Sportage

RRP £28,085Avg. savings £3,144 off RRP*Used from £12,790
Nissan Juke

Nissan Juke

RRP £19,805Avg. savings £4,765 off RRP*Used from £9,000
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Hyundai Ioniq 3 breaks cover with stunning sci-fi looks
Alastair Crooks with the Hyundai Ioniq 3

New Hyundai Ioniq 3 breaks cover with stunning sci-fi looks

Despite sharing the same underpinnings as the Kia EV2, the Hyundai Ioniq 3 looks radically different
News
20 Apr 2026
Fiat's Grande Panda is about to get cheaper thanks to a good-old manual gearbox
Fiat Grande Panda Hybrid in La Prima trim - front tracking

Fiat's Grande Panda is about to get cheaper thanks to a good-old manual gearbox

Fiat will soon offer the currently auto-only Fiat Panda with a manual gearbox, lowering the range’s starting price and keeping petrol power alive
News
20 Apr 2026
Luxurious Audi Q9 SUV to compete with Range Rover from 2026
Audi Q9 render

Luxurious Audi Q9 SUV to compete with Range Rover from 2026

Audi’s next flagship will be a huge SUV aimed at US and Middle Eastern markets
News
20 Apr 2026