🔋 DroneLog · guides

How to store LiPo batteries safely

How you store your packs between flights affects both how long they last and how safe they are. LiPo cells hate sitting at full charge, hate heat, and hate being forgotten flat for weeks. Getting storage right is one of the easiest wins in the hobby — it costs nothing and noticeably extends pack life.

Store at storage charge, not full

The single most important rule: if you won't fly a pack within a day or two, bring it to storage charge — roughly 3.7–3.85 V per cell, often called around 50–60% of capacity. Most LiPo chargers have a dedicated "Storage" mode that gets there for you. Leaving packs fully charged for days stresses the cells and accelerates aging; leaving them fully drained can damage them permanently.

Temperature matters

• 🌡 Keep packs in a cool, dry place at moderate room temperature — roughly 5–25 °C / 40–77 °F is a safe range for storage.
• 🚫 Never leave LiPos in a hot car, in direct sun, or next to heat sources. Heat is the enemy of cell life and a real fire trigger.
• ❄ Avoid freezing them, and let cold packs warm to room temperature before charging or flying.

Fire safety

• 🧰 Store packs in a fireproof container — a LiPo-safe bag, ammo can, or metal box — away from anything flammable.
• 🔌 Don't leave batteries charging unattended, and charge on a non-flammable surface.
• 🛡 Protect terminals from shorting against keys, tools, or other packs.
• 🎈 A puffed, damaged, or hot pack is done — discharge it safely if you can, and recycle it at a proper battery drop-off. Never bin a LiPo.

Don't forget the cycle count

Good storage extends life, but every pack still has a finite number of cycles. Knowing how many each one has used is what lets you retire it at the right time. DroneLog counts a cycle automatically each time you log a flight against a battery, so the pack you carefully store is also the pack whose true age you actually know.