So after driving across France for the past 10 days, I’ve noticed;
- at motorway speeds, battery charges at 1-2 amps
- around town, battery charges at up to 10 amps
- on a 5 hour run on a motorway, my SOC increases by around 4%
- a 30 minute drive around town can increase my SOC by 2%-3%
- I seem to lose 3% battery charge per day if not driven
Assuming my battery is fine and SOC display is accurate, based on my observations, the software for the smart alternator needs to be updated to provide more charging at higher speeds/loads. I have a diesel Trialmaster with auxiliary battery, 2500km. My battery was at 81% this morning and I’ve bought a basic charger to top it up. I will get my battery checked when I return home to rule out any issues with my battery.