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

Dacia Spring

Dacia Spring

RRP £11,990Avg. savings £703 off RRP*Used from £12,750
Nissan Juke

Nissan Juke

RRP £9,750Avg. savings £4,806 off RRP*Used from £7,999
Audi A3

Audi A3

RRP £10,950Avg. savings £2,554 off RRP*Used from £10,950
Volkswagen Polo

Volkswagen Polo

RRP £9,490Avg. savings £2,419 off RRP*Used from £6,270
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

All-new Volkswagen ID. Buzz confirmed with new tech and a cheaper price
Volkswagen ID. Buzz - side

All-new Volkswagen ID. Buzz confirmed with new tech and a cheaper price

A second-generation of the reincarnated hippie bus will utilise VW’s brand-new, groundbreaking SSP architecture
News
12 Oct 2026
Volkswagen’s culling of 75 models by 2035 was inevitable, says CEO
Volkswagen Polo - front cornering

Volkswagen’s culling of 75 models by 2035 was inevitable, says CEO

Brand boss Thomas Schäfer says halving the number of models made by the VW Group is part of a “natural transition”
News
14 Oct 2026
No ban on car touchscreen climate controls, say safety experts
Touchscreen climate control

No ban on car touchscreen climate controls, say safety experts

Climate and audio controls are not deemed “time critical” by industry safety experts, Euro NCAP
News
12 Oct 2026