How to Achieve Long Battery Life

Sometimes customers call us because of a battery problem in their electric car. Especially in spring when it's warmer outside and the kids can use their favorite car again. Finally you can pull the car out from the garage or from the cellar and enjoy it, but the car is not starting. To save you time and prevent similar situations, we have written down some basic facts of how to care for the batteries. As some say, what you give is what you get — and it is also similar to battery care.

What are SLA batteries?

SLA (Sealed-Lead-Acid) batteries are maintenance-free, sealed, gel batteries. The contained electrolyte is not in liquid state and can therefore be used in any position. Their advantage is simple handling, maintenance and long lifespan. Such a battery does not create hazardous waste and there is no risk of acid leakage like with other batteries.

Charging of the SLA batteries

Do not use anything other than the original charger. These chargers are fully automatic and control the charging process. Charge time is around 6–8 hours for 100% discharge, but we do not recommend discharging your battery completely. Charge the car after every use, or at least once a month during the months when the car is not used! It is similar with your personal car — you also don't let it stand for several months without starting it. The rule is that the less the battery is discharged before charging, the more cycles (charging and discharging) can be achieved.

Standard charging cycles for SLA batteries:

• At 30% discharge, up to 1400 cycles can be achieved.
• At 50% discharge, up to 600 cycles.
• At 100% discharge, about 300 cycles.

These parameters are achieved under ideal conditions such as ambient temperature (20–25 °C), ideal ambient humidity and correct charging.

Storage

Do not leave the electric car outdoors, unprotected from rain and snow, especially during the winter months. Store the battery fully charged. While stored, the battery self-discharges by approximately 3% per month, so it's good to charge the car once a month for long-term storage. A discharged battery freezes at −1 °C; a fully charged one only at −15 °C.

In conclusion

To sum up, the basic rules to keep the batteries in the best possible condition and to make the most of their potential are:

1. Charge the battery once a month, especially in the winter months!
2. We recommend recharging the battery after every use — it increases the lifespan of the battery in your electric car.
3. Do not use a charger other than the original supplied with your electric car.
4. Store a fully charged battery. It will be more resistant!