This whole battery problem is caused by a relatively difficult issue to resolve, and that is the fact that WE destroy our batteries because we over discharge them and, we don't charge them enough before we use them again, which reduces their capacity fast. This is a known problem which is hard to fix because our schedule is what it is and the gaps of time between drives are too short.
This basically means that every few months WE have to replace a whole set of batteries which is expensive. However, Peter Braat is working on a method of charging which will hopefully keep the next set for a year without them being destroyed.
WE have bought a new set and will be picking them up from Nelspruit in the next few days. Then WE will be back to proper three hour drives and night drives as well. Thank you for being so patient and understanding about this problem and rest assured in the knowledge that WE are doing everything within our power to get back to normal as soon as possible.