1) Recharge your HULKMAN at least every 3 months:
To keep the jump starter in good working condition, you should charge it at least every 3 months.
2) Store it in a room temperature:
Our device is designed to perform well in a wide range of storage temperatures. But to prolong its lifetime, please avoid charging or leaving HULKMAN products in extremely hot or cold environments, including direct sun exposure.
3) Keep the battery level above 80%