Adding 2 more T-105 questions.
I have 2 105's that are 5 years young and would like to add 2 more. The original batteries are in mint shape. They have never been used past 60% capacity and the specific gravity is maxed out in all t...
Forum Discussion
Great JR,
You have a good understanding and are asking the right questions.
In simple response, lead acid batteries do not play well together - no matter what. I have done electrics on performance cruisers (read - retired racing yachts) for years and this is a constant issue. Even if you have batteries with consecutive serial numbers, they will age differently enough to mess up everything....
But, if you charge each bank separately, you can get each to full density and then combine them for discharge and get very close to rated capacity. If you try to do this with them joined, one will always be selfish and hog the charge current. The fact that one set is 5yo does not even have an effect on the overall situation. They could be twins and you will still see an advantage by charging each separately.
Then, it only comes down to the inverter holding the load. By the way, the labels on microwaves virtually always disagree with less than lab grade instruments. That is great, because the readings you get from a Kill-A-Watt (~30$) are closer to real world than what the lab grade stuff reports.
Matt
You have a good understanding and are asking the right questions.
In simple response, lead acid batteries do not play well together - no matter what. I have done electrics on performance cruisers (read - retired racing yachts) for years and this is a constant issue. Even if you have batteries with consecutive serial numbers, they will age differently enough to mess up everything....
But, if you charge each bank separately, you can get each to full density and then combine them for discharge and get very close to rated capacity. If you try to do this with them joined, one will always be selfish and hog the charge current. The fact that one set is 5yo does not even have an effect on the overall situation. They could be twins and you will still see an advantage by charging each separately.
Then, it only comes down to the inverter holding the load. By the way, the labels on microwaves virtually always disagree with less than lab grade instruments. That is great, because the readings you get from a Kill-A-Watt (~30$) are closer to real world than what the lab grade stuff reports.
Matt
