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

Audi A3

Audi A3

RRP £26,310Avg. savings £2,657 off RRP*Used from £9,495
Nissan Qashqai

Nissan Qashqai

RRP £27,435Avg. savings £5,987 off RRP*Used from £10,795
Omoda 5

Omoda 5

RRP £24,040Avg. savings £1,535 off RRP*Used from £19,290
Skoda Kodiaq

Skoda Kodiaq

RRP £39,045Avg. savings £7,139 off RRP*Used from £10,749
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Ford Focus primed for sensational return, but as an SUV
Ford Focus exclusive image

Ford Focus primed for sensational return, but as an SUV

Could a new Ford Focus be ready to fight Europe’s biggest sellers such as the Volkswagen T-Roc and Nissan Qashqai?
News
4 Jun 2026
Kia PV5 gets long-awaited 7-seat version for under £37k
Kia PV5 7-seater - front 3/4

Kia PV5 gets long-awaited 7-seat version for under £37k

The seven-seat Kia PV5 boosts family-friendly range alongside some neat range-wide upgrades
News
3 Jun 2026
New Audi Q4 e-tron: the cheapest Audi EV just got even cheaper
Audi Q4 e-tron facelift - front action

New Audi Q4 e-tron: the cheapest Audi EV just got even cheaper

Audi’s second best-selling car has just been made even better
News
4 Jun 2026