Do I need this?
 

Re: Do I need this?
 

And speaking of Optima, in Europe they also get 6v yellow tops.


https://images.tayna.com/prod-images...yts2.1-top.jpg

Re: Do I need this?
 

That is a huge waste of money. Just my opinion.

Re: Do I need this?
 

Why are your posts so GIGANTIC?

Re: Do I need this?
 

I did connect batteries in parallel like that one time, and they were Optimas, but the only reason I did it is because I had accidentally deep-discharged one of them – to the point where my trickle charger wouldn't start the flow of power when I connected it.

Someone then informed me that you could connect another battery in parallel between the dead battery and the charger, get the charger to start sending power to that battery, and the power would "overflow" to the dead battery. And then after doing that for a while you take the second battery out and recharge the first one like normal.

And it totally worked. Brought that Optima back from zero.

I dunno why you would do this in a car, though. Like if you cannot run your Model A off an Optima red-top, you have other problems.

Re: Do I need this?
 

I'm trying to help out the vision impaired community.

Re: Do I need this?
 

Re: Do I need this?
 

I can think of one reason. Although this setup still gives you 6v I think it boosts the cold cranking amps tremendously which would be good to have in Arctic winter temperatures of below -40. Your vehicle’s battery loses 50% of its power when the temperature falls below 0 degrees F (-18 degrees C).

Re: Do I need this?
 

50% of battery power is sufficient to fire the sparks. You stay in front with the crank, that helps to withstand the arctic winter.
Sorry, here the link :https://www.batterystuff.com/kb/arti...-tutorial.html

Re: Do I need this?
 

Stay in front with the crank you say...
https://ichef.bbci.co.uk/news/660/cp...oureux_003.jpg

Re: Do I need this?
 

Try this:
https://www.amazon.com/gp/product/B000I8XD9E/

80 Watt 36" Battery Thermal Wrap. Keeps the battery warm. Much cheaper than buying a second Optima red-top.

Re: Do I need this?
 

A few years ago we had a several day real cold spell, the A had been sitting for 4 months, no charger, the 10 year old optima, a single one was enough at -10 to start it

Re: Do I need this?
 

Stay in front with the crank you say...
https://ichef.bbci.co.uk/news/660/cp...oureux_003.jpg
I do not think you will reach the zone of the polar bears with your ford a

Re: Do I need this?
 

I keep a trickle solar charger on my truck to help keep the Optima topped off during the winter. Makes a difference.