Introduction
This manual provides essential instructions for the safe and efficient use of your GP Batteries GPPB420 charger and the included GP Recyko+ 1000 AAA rechargeable batteries. Please read this manual thoroughly before first use and retain it for future reference.
Safety Information
- Use only NiMH rechargeable batteries with this charger. Attempting to charge other battery types may cause personal injury and damage.
- Do not expose the charger or batteries to water or excessive moisture.
- Do not disassemble, modify, or short-circuit the charger or batteries.
- Keep out of reach of children.
- Unplug the charger from the power outlet when not in use or before cleaning.
- Do not use the charger if it is damaged.
Package Contents
Verify that all items are present in your package:
- 1 x GP Batteries GPPB420 Charger
- 4 x GP Recyko+ 1000 AAA NiMH Rechargeable Batteries

Image: The product packaging for the GP Batteries GPPB420 charger and four GP Recyko+ 1000 AAA rechargeable batteries. The packaging highlights features such as 'Overnight Charger', '2 LED Indicators', compatibility with AA/AAA NiMH batteries, and that the AAA batteries are precharged to 950mAh.
Setup
- Unpack: Carefully remove the charger and batteries from their packaging.
- Insert Batteries: Open the battery compartment of the charger. Insert 2 or 4 AAA NiMH batteries into the charging slots, ensuring correct polarity (+ and - ends match the markings inside the charger). The charger is designed to charge batteries in pairs.
- Connect to Power: Plug the charger directly into a standard AC 100-240V wall outlet.
Operating
- Charging Indication: Once connected to power with batteries inserted, the monochrome LED indicator on the charger will illuminate, indicating that charging is in progress.
- Charging Time: The GPPB420 is an overnight charger. For the included 1000 mAh AAA batteries, a full charge typically takes approximately 8-12 hours. Charging time may vary depending on the battery capacity and remaining charge.
- Completion: The LED indicator will remain illuminated throughout the charging process. This charger does not feature an automatic shut-off or a distinct 'charged' indicator. It is designed for safe overnight charging.
- Removing Batteries: Once charging is complete, unplug the charger from the wall outlet and remove the charged batteries.
Maintenance
- Cleaning: Disconnect the charger from the power source before cleaning. Use a dry, soft cloth to wipe the exterior of the charger. Do not use liquid cleaners or solvents.
- Battery Care: Store batteries in a cool, dry place when not in use. Avoid fully discharging batteries frequently to prolong their lifespan.
- Disposal: Dispose of old or depleted batteries and the charger according to local regulations. Do not dispose of them in household waste.
Troubleshooting
- LED not lighting up:
- Ensure the charger is securely plugged into a working power outlet.
- Verify that batteries are inserted with correct polarity.
- Check if the batteries are NiMH type.
- Batteries not charging:
- Confirm the charger is receiving power (LED should be on).
- Ensure batteries are properly seated in their slots.
- Try charging a different set of known good NiMH batteries to isolate the issue.
Specifications
| Model | GPPB420 |
| Charger Type | NiMH Battery Charger |
| Input Voltage | AC 100-240V |
| Charging Channels | 2 (charges 2 or 4 batteries) |
| Compatible Battery Sizes | AAA, AA (NiMH only) |
| Battery Type (Included) | NiMH |
| Battery Size (Included) | AAA |
| Battery Capacity (Included) | 1000 mAh |
Warranty and Support
Specific warranty details for this product are not provided in the current documentation. For warranty claims or technical support, please refer to the retailer where the product was purchased or contact GP Batteries customer service directly through their official website.