Quantum QB1+ Battery. Affordable, reliable power for most shoe-mounted flash units that use 4 or 5 "AA". (If your flash is handle-mounted and uses six "AA" batteries see the Quantum QB2 battery.) Provides hundreds of flashes and fast, consistent recycling time. In many situation, when using your flash in automatic / TTL mode, and where full power is unnecessary, you can expect over 1,000 flashes. 50% faster recycling than "AA" batteries, and consistently fast recycling times, even as battery charge is depleted. The "fuel gauge" lights make monitoring battery capacity and charging a snap. QB1+ is rechargeable up to hundreds of times. Save hundreds of dollars on throw-away batteries, and help the environment.

Features:

• The Quantum Battery 1+ provides several hundred full power flashes and fast, consistent recycling for most 6 volt flash units.
• Specially designed modules fit into the flash battery compartment to replace unpredictable nicads or alkalines.
• 50% faster recycling, and consistently fast even as battery charge is depleted.
• 250+ full power manual shots, and 1000+ automatic shots per charge.
• Power monitor "fuel gauge", on/off, and charge status/complete indicators. Easily monitor your units' condition.
• Recharge fully at any time, without fear of developing a "memory".
• The pack holds its charge for months when not in use.
• Charger is provided. Charges fully in 3 - 10 hours with standard charger.
• Charge light goes out when charging is complete.
• Electronic circuit breaker prevents damage to flash or battery.
• Automatically shuts itself off, and cannot be turned on without a module plugged in, preventing accidental drain of the cells.