How to store Lithium-Ion batteries over winter

It's important to store your batteries correctly over winter to avoid any potential damage. Lithium-Ion batteries in particular are sensetive to extreme temperatures.

In rare cases of batteries being stored incorrectly for long periods of time, it is even possible for the battery to become completely unusable, this is called deep discharge.

Deep discharge occurs when the entire battery capacity is depleted; this usually happens when batteries are stored empty of charge and then discharge themselves even further. If self-discharge occurs for too long, this causes deep discharge and can result in permanent, irreversible damage to the battery.

But don't worry, the experts at Flymo have got you covered; check out our top tips for storing your batteries over winter below.

Storing Batteries for Winter

1- Fully charge battery pack

Batteries can slowly lose charge over the months they are in storage (especially when kept in the cold). So starting them off fully charged when packed away will help prevent any damage to the cells.

2- Store it in a dry place

Damp or leaky sheds are not ideal places for storing batteries; as you should not place your batteries where the moisture level is high. The battery will absorb moisture, and this can decrease its lifespan due to water encouraging corrosion. It is better to bring the battery inside to a dry and warm area.

3- Store in an appropriate temperature

We suggest that if the machine is likely to be stored in very cold temperatures, that the battery be removed from the machine prior to storage.

Li-Ion cells will become compromised if stored below 0 degrees. We do not therefore recommend storing in a shed or garage over winter as temperatures in these areas can drop below zero.

Equally, avoid a storage area with direct sunlight as higher temperatures can equally accelerate the battery's ageing. Around 15-20 degrees C (or room temperature) is perfect.

4- If stored in cold check charge status periodically & re-charge

During storage, care must also be taken not to store the battery for too long. Ideally, a period of up to six months should be observed. During long storage, it is best to check the charge status periodically.

5- Ensure storage from metal objects

You should store your Li-Ion battery in a storage spot free from metal objects such as screws & nails that could come in contact with the battery terminals.