The Protel 4.8 Volt Battery is a high-quality, long life Nickel Cadium battery which is compatible with most Protel payphones.

- Compatible with Protel circuit board models 310, 2000/6000, 7000/9000, and 4000/8000.
- All batteries are not alike. G-TEL uses only high quality, long life cells.

Technical Specifications: 4.8 Volt, 500 mAh (4 x 1.2V cells) Nickel-Cadium with Molex SL type plug.