maintenance can even help to extend your battery’s capacity to hold its
charge for many years to come.
This guide will cover need-to-know advice – from how to clean a
lawnmower battery to storage, best-practice in charging habits, how to
winterise your battery and more.
1. Taking care of your mower battery.
2. Winterising your mower battery.
3. Cleaning your mower battery.
4. The importance of battery care.
The tips in this guide also apply to Hayter’s full battery lawnmower range.
From the compact Hawk 36 and Hawk 43 for smaller gardens, to the
Harrier 60V range for larger lawns, and the Harrier Pro 60V range for
professional use.
How to take care of your lawnmower battery
Your battery will last longest when stored somewhere cool and dry – ideally between 5°C and 40°C. A kitchen or utility room is ideal, so avoid leaving it in a shed or outbuilding where temperatures can swing dramatically.
Try to keep the battery topped up rather than running it flat before each charge. Once it’s fully charged, take it off the charger – leaving a fully charged battery plugged in for hours causes unnecessary strain over time.
Avoid letting the charge drop to zero. If you finish a mow with a low battery, recharge it promptly rather than leaving it sitting empty.
After each use, give the battery a quick wipe-down to remove grass clippings and moisture. Pay attention to the metal contact points where the battery connects to the mower – keeping these clean ensures a reliable connection every time you start up.
How to winterise your lawnmower battery
When mowing season ends, it’s worth taking a few minutes to store your battery properly – this makes a huge difference to how well it will perform come spring, especially in terms of charge capacity.
Remove the battery from the mower before putting it away. Leaving it in the mower over winter can slowly drain it thanks the machine’s onboard electrics, and a battery left completely flat for months can lose maximum capacity.
Before storing, charge the battery to two green lights – roughly half-full (50%). This is the sweet spot for long-term storage: a fully charged or nearly empty battery both age faster when left unused.
Give the lawnmower battery a quick clean and visual check before you put it away – do the same when you bring it back out in spring.
Store your battery indoors, somewhere dry and away from damp or direct sunlight. A utility room or insulated cupboard works well. Avoid damp sheds or anywhere that gets very cold.
If you own a Harrier 56 60V, Harrier 56 Pro 60V or a Harrier 48 Pro 60V that uses a dual-battery system – it’s also worth picking up a spare battery, so you’re ready to go from the first cut of spring.
Browse Hayter’s batteries and accessories, ranging from 2.5Ah to 10Ah.
How to clean a lawnmower battery
To safely clean your lawnmower battery, start by removing the battery from the mower. Never clean it while it’s still connected or on charge.
Brush off any loose grass, soil or leaves from the casing. A dry cloth or soft brush works well.
Take a look at the metal contact points where the battery connects to the mower. If you see a white or greenish build-up (a sign of corrosion), contact your nearest Hayter-authorised dealership.
Make sure the mower is dry or in a well-ventilated spot before putting it back on the mower or placing it on charge.
Why is lawnmower battery care important?
Proper battery care is crucial for ensuring a lawnmower holds its charge reliably, starts first time and delivers consistent power throughout the cut for years to come.
A neglected battery can lead to shorter run times, sluggish starts and eventually an uneven cut, as the motor loses power before the job’s done.
The good news is that none of this requires much effort. A few straightforward habits – sensible charging, proper winter storage and an occasional clean – are all it takes to keep your battery in good shape for years to come.
Browse Hayter’s full range of battery lawnmowers.