Red Box RB75A-24 Portable Start Power Unit – 1700A at 24V DC

Yes! The RB75A is designed for safe air transport. It features sealed cells with no free liquid, allowing it to be transported or operated in any position by land, sea, or air. The unit meets CAA Ref. 10A/211/12 in accordance with ICAO Special Provision A67, which ensures air transport compliance. Always ensure the unit is securely tied down and the fly lead is disconnected before transport.

When storing the RB75A for a month or more, it should be fully charged for at least 24 hours before storage. While the unit has low self-discharge, it's recommended to store it in a charged state and avoid full discharge for best performance. Temperature can affect storage performance, so keep the unit in a dry, temperate environment away from direct sunlight or extreme cold.

Before using the RB75A for the first time, you should fully charge it for a minimum of 24 hours. This initial charge ensures the internal cells are fully exercised and optimized for maximum service life. After 2 to 3 starts with full charges in between, the power pack will be at its optimal performance level.

For best performance and battery longevity, the RB75A should be recharged continuously for 24 hours every two weeks. If it’s regularly recharged from an aircraft, this dedicated charger-based cycle is still recommended to keep the cells in optimal condition. Avoid letting the unit sit in a partially discharged state, as undercharging can reduce performance over time.

Yes, the RB75A can be safely left on the charger for extended periods, provided the mains power is left on. In fact, doing so is beneficial to the health of the pack. The charger is specifically designed to prevent overcharging and includes a float mode to maintain optimal charge levels.

While the power pack can technically be switched on while on charge, you should never start or crank an aircraft engine while the charger is connected. Always disconnect the charger before using the unit for engine starting to avoid potential damage to the battery or charging system.

Operators should be trained in proper procedures before using the RB75A. Always confirm correct polarity before connection, never use the isolator key as a starter switch, and never attempt to start an engine with a seized motor or connected charger. Disconnect removable cables when not in use and avoid short-circuiting the terminals or onboard batteries.

No, the RB75A does not use nickel-cadmium cells and does not have a memory effect. It can be recharged at any time, even after partial use, without impacting battery longevity. This makes it ideal for frequent, short bursts of use in demanding aircraft starting environments.

Only use the voltage-controlled charger supplied by Red Box. This charger is calibrated for the RB75A’s cell type and ensures safe, efficient charging. Using other chargers may result in undercharging, overcharging, or permanent damage to the power pack.

The RB75A comes with a limited one-year warranty from the date of delivery. The warranty covers defects in Red Box materials and workmanship but does not apply to misuse, unauthorized modifications, or improper charging.

While the RB75A is built for rugged use, it should not be exposed to extreme heat or cold. In freezing conditions, keep the unit warm until it’s ready to be used, and avoid leaving it in direct sunlight for extended periods. This ensures optimal battery performance and prevents unnecessary strain on internal components.