Different Advice on Mixing Batteries in Parallel?

It is less than advisable to mix Telecom and regular AGM batteries. Check this out with Concorde if you wish I'd love to hear their opinion.

When I lived with Arctic winters and cars did not have HAL 9000 mind controls I used an 8+6 volt pair for jump starting.

Fully charge individual same type of batteries

Let rest for 5 days. Check voltage oc. Do they agree >.1< ?

Series string, under charging, at more than than 30% total amp hours rate. Measure INDIVIDUAL BATTERY VOLTAGE. Is the acceptance within .1 ?

Yes to both questions? The batteries agree. Go for it.

AGM batteries use virgin lead. And acid density of 1.300

Flooded batteries use whatever lead alloy in the positive plates and even hybrid plates, therefore using different brands or different grades is a no-no.

BFL13 wrote:
Appendix B , 12 and 13 answers may surprise some folks. Fist-fights could erupt!

http://lifelinebatteries.com/wp-content/uploads/2015/12/6-0101-Rev-E-Lifeline-Technical-Manual.pdf

Ah.. Well let me give you all the argument I will give you on those answers.. ...

YOu have made my day. I've been saying exactly that for like 15 years and as you implied I've been flamed many times.. Nice to have the experts say exactly what I have been saying right down to the reasons why!!!

dougrainer wrote:

BFL13 wrote:
Appendix B , 12 and 13 answers may surprise some folks. Fist-fights could erupt!

http://lifelinebatteries.com/wp-content/uploads/2015/12/6-0101-Rev-E-Lifeline-Technical-Manual.pdf

12 AND 13 involve STRINGS and not individual batteries. This also is about using Lifeline batteries and not regular AGM or Lead batteries. Lifelines are the Rolls Royce of Batteries and as long as you take care of them will last for at least 5 years. 5 years is what their warranty term is. Funny thing is, IF you have a Lifeline and it fails, they rarely warranty them in that 5 years. Because they feel the ONLY way one of their batteries can fail is by misuse. Doug

Yes, a "string" means they are in series (so #11 applies) but then 12 and 13 are about paralleling strings, which is no different from paralleling individual batteries IMO.

Time2roll has always said it is ok as long as the batts are all in the same condition. Idea is the float voltage will "float all boats".

But 13 says it is ok to parallel an older battery (or string) with a new one. I assume that is with a float voltage on the bank. The usual advice is that is a no-no. (eddy currents or whatever)

I have always agreed with what Lifeline says. What is there to talk about?

BFL13 wrote:
Appendix B , 12 and 13 answers may surprise some folks. Fist-fights could erupt!

http://lifelinebatteries.com/wp-content/uploads/2015/12/6-0101-Rev-E-Lifeline-Technical-Manual.pdf

12 AND 13 involve STRINGS and not individual batteries. This also is about using Lifeline batteries and not regular AGM or Lead batteries. Lifelines are the Rolls Royce of Batteries and as long as you take care of them will last for at least 5 years. 5 years is what their warranty term is. Funny thing is, IF you have a Lifeline and it fails, they rarely warranty them in that 5 years. Because they feel the ONLY way one of their batteries can fail is by misuse. Doug