How to Replace Your Powerstart Booster Pack Battery – Step-by-Step Guide
Keeping your Powerstart booster pack in top condition ensures reliable performance when you need it most. Over time, even high-quality batteries lose capacity — so replacing your internal 12V or 24V battery is essential for consistent cranking power.
In this quick guide, we’ll explain how to replace your Powerstart battery and what to look for when choosing a high-quality replacement.
*** Note if you have the 1224 pack you'll require x2 batteries ***
When to Replace Your Booster Pack Battery
If your booster pack:
- Struggles to hold a charge,
- Takes longer to deliver full power, or
- Fails to start vehicles it previously could —
…it’s likely time to replace the internal battery. These signs usually indicate reduced voltage output or capacity loss due to age or heavy workshop use.
Tools & Equipment You’ll Need
Before starting, make sure you have:
- Screwdriver or Torx set
- Insulated gloves
- Replacement 12V 22Ah Powerstart battery (available from Nitrile Grip)
- Clean workspace
Step-by-Step Replacement Instructions
- Unplug the Booster Pack – Ensure it’s disconnected from all chargers or vehicles.
- Open the Casing – Remove screws securing the outer shell of your Powerstart 700 or 1224.
- Disconnect the Old Battery – Carefully unclip the terminals and remove the old unit.
- Install the New Battery – Fit the new 12V 22Ah battery, connecting red to positive (+) and black to negative (–).
- Reassemble the Unit – Secure the casing and test your booster pack to confirm correct operation.
- Put unit on charge and leave minimum 24 hours before use, once used put back on charge.
Pro Tip for Mechanics
Always opt for OEM-quality replacement batteries designed for Powerstart models. Cheap, undersized alternatives may not deliver the required cranking amps — reducing both power and reliability.
Shop Powerstart Replacement Batteries
At Nitrile Grip, we stock high-performance 12V 22Ah replacement batteries built specifically for Powerstart 700 and 1224 booster packs. Designed for daily workshop and roadside use, they provide long-lasting, dependable starting power.