speed will be different; two batteries capacity difference during riding is normal phenomenon.
3.3.3.Storage, maintenance, transportation
When the battery pack needs long-term storage, please charge the battery pack to a half-saturated state (the better
battery power is between 30% and 60%). Place it in a dry, ventilated place.
Recharge the battery every month.
Battery storage conditions:environment temperature -20 ~ 35
。
C, environment humidity ≤ 65% RH;
When storing the charger, disconnect with the battery pack.
If users didnot use correctly and without maintenance, and storage more than max 3 months safety storage
period(scooter storage more than 1 month with plug in, battery separately storage more than 3months), battery
didnot get charged in time, which will result in under voltage and cannot be repaired.