Nickel Iron (NiFe) Batteries ... The few, but Overwhelming and Towering Strengths

...... Why? When I put these batteries into service, I installed a watering system from Battery Watering Systems, and this system failed miserably to do its job. Parts of the float mechanism were clearly not compatible with alkaline battery chemistry. Many cells were overwatered, chronically. This was not clear at the time, due to the difficulty assessing individual batteries in the array, with the watering system in place (it made it essentially impossible to closely inspect all the cells, systematically. Furthermore, overwatering individual cells led to float oil being floated out of the cells. At this point, I have wide variations in specific gravity, with some being optimal, some high, and some quite low (barely over 1!). Due to the loss of oil on many cells, and the frequent opening of cells for maintenance, since ripping out the BWS watering system, I am pretty certain there is significant carbonation........