Batteries & chargers

When to choose which battery or charger

• Camera batteries (packs): Model-specific packs for OM SYSTEM, Canon, and similar cameras. A dual-slot charger is useful if you rotate multiple packs.
• Action-camera batteries: Compact, brand-specific packs such as GoPro. Handy as spares during snorkeling or a full day at sea.
• Li-ion 18650/26650: High-capacity cells for video lights and dive lights. Long runtimes and stable discharge.
• Ni-MH AA: Reliable option for strobes. Also widely used in other accessories.
• Travel power: USB-C chargers and power banks are practical when away from home. A universal charger helps if you mix battery formats.

Key decisions

Chemistry & format

Li-ion cells like 18650/26650 offer high density for underwater lighting. Ni-MH AA batteries are common in strobes. Camera and action-camera packs require the exact form factor and charge profile for each model.

In-camera charging vs. external

Some cameras allow charging inside the body via USB. Convenient at home, but during charging the camera cannot be used. For travel or full dive days, an external charger and spare battery are smarter: one charges while the other is in use.

Charging speed & protection

A fast charger cuts downtime. Follow recommended charging current and use chargers with temperature or overcharge protection. Dual-slot designs help manage multiple packs. With USB-C, regulated voltage and current improve reliability.

Safety & care

Charge in a dry, ventilated place. Inspect contacts and cables. Avoid high temperatures and do not store Li-ion cells completely empty for long periods. Follow airline rules when flying with batteries.

Brand alternatives

Besides original packs, OM SYSTEM-compatible batteries & chargers and Olympus-compatible sets are available. Jupio offers well-priced alternatives for many OM SYSTEM and Canon models, useful when extra sets are needed for trips.

Quick tips for Li-ion

• Use a compatible charger with built-in safeguards.
• Avoid full discharge; swap or recharge around 20–30%.
• Partial charges are fine; daily use between ≈20–80% often extends longevity.
• Charge at room temperature and let batteries cool before recharging.
• For storage longer than a few weeks, keep at 40–60% state of charge in a cool, dry place.