Batteries in series - How to

[sneak_e_pete]

To put 2 deep cycle in series (i.e. not to make it 24v, but to make battery life longer), what is the set-up? Thanks.

[HTHM]

To put 2 deep cycle in series (i.e. not to make it 24v, but to make battery life longer), what is the set-up? Thanks.

Jump positive to positive and ground to ground, draw power from one battery.

[sneak_e_pete]

Thanks!

[Terry]

you want them in parallel ,positive to positive and negative to negative 12 volts out

 

in series it would be 24 volts out, positive to negative

[irishfield]

What Terry says..

 

Parallel.. is just that.. side by each "in parallel". = 12 volts no matter how many you hook together

 

Series.. end to end... "in series". = 12v time X... X being the number of batteries.

[Garnet]

If you want the absolute longest run time run 1 then switch to the other. Be aware that running battery's dead is very hard on them.

 

If 1 of your battery's is a 1000 crank and the other is 850 they will equalize to the lower #. If one of your battery's has a dead cell both will be dead quickly.

 

When you hook battery's in parallel say 1000 crank you do not get 2000 you get about 2/3's so about 1500.

 

Garnet

[Glaucus]

If you want the absolute longest run time run 1 then switch to the other.

 

 

Your information doesn’t agree with ‘Peukert's Law' , (this is assuming both batteries are ‘matched’, i.e. the same size, age, state of charge, etc...)

What am I missing?

Could you please explain your advice!

[Garnet]

You answered your ?

 

Assuming

 

Assuming Peukert law

 

Assuming perfect world

 

You will get about 2/3's for me I would kill 1 battery then the next then the next.

 

Garnet

[fishermccann]

What???????????????????

[ohhenrygsr]

12/24