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- GET LONGER BATTERY LIFE FROM YOUR
- REGENCY MX-4000 OR MX-4200 SCANNER
-
- by Bob Parnass, AJ9S
-
- The discontinued Regency MX-4000 and MX-4200 are battery
- operated, 20 channel scanners manufactured in Japan by
- AOR. Both scanners contain a low battery warning circuit
- which disables the scanner when the battery voltage falls
- below a preset level.
-
- A freshly charged battery pack should last at least 5
- hours before needing a recharge. Ron Smithberg, of
- Joliet, IL, complained of getting only 2 hours use from a
- set of freshly charged NiCd batteries in his MX-4200.
- This article describes how we increased his usage to over
- 7 hours between charges.
-
- Both MX models are powered by a pack of 4 AA sized NiCd
- batteries. The battery pack is nominally 4.8 volts and
- has a rated capacity of about 500 mAh. The scanner draws
- about 100 mA when squelched. A good rule of thumb is
- that a NiCd should be recharged when its voltage falls
- below 1.0 volts per cell. Using this heuristic, the MX-
- 4200 battery pack should be recharged when it falls below
- 4.0 volts under load.
- CONTINUED IN FILE MX4000.3