Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Batteries

I've just measured the voltage across the battery terminals:

Idle: 14.2V
5000 rpm: 14.2V

I've also noted that the dashboard meter reads significantly low! 13.8V (estimated as the graduations are not precise.

I don't think that's too high. The spec sheet says the following:

Alternator: 13.3 to 15.0 volts; no amperage limit
Battery Charger: 13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
Float Charge: 13.2 to 13.8 volts; 1 amp maximum current (indefinite time at lower voltages)
Rapid Recharge: (Constant voltage charger) Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 50°C (125°F). Charge until current drops below 1 amp.

The previous battery was very "discount"!