Dang, that DHPM 31 Deal seems to have ended at midnight. However, check sears.com every day. There seem to be frequent, brief, good deals online for in-store pickup. If I'd known that 31M would fit nicely I would have grabbed one.
deep cycle batteries
- Thread starter itbrokeagain
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rain76king
Wicked Pissah Cruisah Haulah a NLC.
Grabbed 2 die hard 31m batteries the other night.
Got the deal and a extra 10% off!
Got the deal and a extra 10% off!
How did you get the extra 10%?
rain76king
Wicked Pissah Cruisah Haulah a NLC.
Had a code! Sweet deal....Picked them up today at the store. Think I'll need a metal tech solid 1'' spacer!
My dual battery system is still in the box. Sad, but true. That's the down side of biting off more than you can chew and trying to turn a stock LC into a fully modded LC too fast.
Here's another thread that is mostly around fitting die hard platinum batteries:
https://forum.ih8mud.com/80-series-tech/176153-dual-battery-setup-how-fit-diehard-platinum-31m.html
There are some good pictures in that thread
https://forum.ih8mud.com/80-series-tech/176153-dual-battery-setup-how-fit-diehard-platinum-31m.html
There are some good pictures in that thread
itbrokeagain
SILVER Star
- Thread starter
- #28
Since its back up I have another question. Will they charge properly with the stock alternator?
Sent from my Nexus S using IH8MUD
Sent from my Nexus S using IH8MUD
Mattnatti
See a Doctor and get rid of it.
That is what I am wondering. I seem to remember a thread a few months ago about one members deep cycle/ marine batteries not recharging properly/ fully. I cannot recall who started the thread.
the big advantage of a true deep cycle battery is that it can take as many amps as you can feed them. ie- if you happen to get one of those Tundra 150amp alternators- you could theoretically recharge those batterys twice as fast compared to the 80amp cruiser ones.
Theres a product made by Promariner called the "digital mobile charge series" which actually will trick the alternator into thinking theres a low charge on the batteries and will automatically switch your alterator into charging at its highest amp rating. Good if you have a tundra 150amp and want to dump a full load into your deep cycles even if they arent fully drained.
- Deep cycles dont like to be drained below its 50% amp hour rating. So if you plan to regularly winch off them.......then you need to double up the amp hours and ONLY drain them 50% and have some type of monitoring system to know that you arent overdraining them on a regular basis. If just for emergencies-and the oddball full drain- youd probably be okay--but you probably dont want to be dropping them below 40%capacity on a regular basis. Same is true for running fridges/etc.........so in your calculation for amp hours and what you are trying to do with your deep cycles- the 50%drain is about best for them.
For winching- a high CCA backup is probably better as they dont mind getting pushed well into the full drain repeatedly. The size and weight of a deep cycle that at 50%drain can put out close to the same CCA will be prohibitive under the hood size and weight wise.
Theres a product made by Promariner called the "digital mobile charge series" which actually will trick the alternator into thinking theres a low charge on the batteries and will automatically switch your alterator into charging at its highest amp rating. Good if you have a tundra 150amp and want to dump a full load into your deep cycles even if they arent fully drained.
- Deep cycles dont like to be drained below its 50% amp hour rating. So if you plan to regularly winch off them.......then you need to double up the amp hours and ONLY drain them 50% and have some type of monitoring system to know that you arent overdraining them on a regular basis. If just for emergencies-and the oddball full drain- youd probably be okay--but you probably dont want to be dropping them below 40%capacity on a regular basis. Same is true for running fridges/etc.........so in your calculation for amp hours and what you are trying to do with your deep cycles- the 50%drain is about best for them.
For winching- a high CCA backup is probably better as they dont mind getting pushed well into the full drain repeatedly. The size and weight of a deep cycle that at 50%drain can put out close to the same CCA will be prohibitive under the hood size and weight wise.
I just realized I'm not sure what the question was. Did you want a pic of a DHP installed, like if it's backwards? Or were you looking at dual battery setups?
I've had no charging issues with stock everything and a DHP.
I've had no charging issues with stock everything and a DHP.
bugsnbikes said:
Incorrect. Deep cycle batteries are able to supply and take up a charge slower than sli batteries due to their thicker plates. AGM batteries are able to take about twice the charge rate of standard lead acid batteries, as well as offer about twice the number of deep discharges as a lead acid battery. That is why they make sence when used for winching.
Sent from my iPad using IH8MUD
the bulk charging which amounts to 80% of three phase charging for deep cycle batteries likes 20-40% of the total amp/hours. any deep cycle thats big enough (50-70lbs) to provide good winching is going to need to be in the 200-300ah range to get 1000cca's.....and can easily take 80-120amps of bulk charging. So upgrading to the tundra alternator would speed up the recharging for the bulk phase of the charge.
the main problem is that deep cycle batts really like a 3phase charging- bulk/absorbtion and a trickle phase......and the alternator is only going to be providing a bulk phase charge and then overheat the plates after the 80% causing gassing of the plates and again effecting long term effectiveness compared to SLA batts which dont mind it at all.
deep cycles like to maintain 50-85%state of charge.......so winching em down to 10% is effecting their long term durability. The avg 200-300ah 12v deep cycle batt that provides 1100cca is tipping the scales at 70lbs and keeping em in the 50% state of charge isnt going to be easy when winching.
theres ways around it- get an alternator charge controller and big enough batts a/h wise to keep it at least over 40%Soc. But in the end its probably way cheaper to just get a beefy Interstate with 1200ccas and call it good. you can throw a deep cycle at the job- and it will probably outlast 1 lead acid batt. But they dont like the job- and theres no way at 3x the price they will outlast 3 lead acid batts given roughly the same size batt. that can fit in the spare spot.
Deep cycles are great at slow discharge (think 2amp fridge/etc)- winching simply doesnt fit that bill (i forget what my warn sucks atm) unless your A/h rating is so high that the winch isnt getting em to even break a sweat. you will get way more years out of your lead acid batts given the winching environment $ per dollar.
the main problem is that deep cycle batts really like a 3phase charging- bulk/absorbtion and a trickle phase......and the alternator is only going to be providing a bulk phase charge and then overheat the plates after the 80% causing gassing of the plates and again effecting long term effectiveness compared to SLA batts which dont mind it at all.
deep cycles like to maintain 50-85%state of charge.......so winching em down to 10% is effecting their long term durability. The avg 200-300ah 12v deep cycle batt that provides 1100cca is tipping the scales at 70lbs and keeping em in the 50% state of charge isnt going to be easy when winching.
theres ways around it- get an alternator charge controller and big enough batts a/h wise to keep it at least over 40%Soc. But in the end its probably way cheaper to just get a beefy Interstate with 1200ccas and call it good. you can throw a deep cycle at the job- and it will probably outlast 1 lead acid batt. But they dont like the job- and theres no way at 3x the price they will outlast 3 lead acid batts given roughly the same size batt. that can fit in the spare spot.
Deep cycles are great at slow discharge (think 2amp fridge/etc)- winching simply doesnt fit that bill (i forget what my warn sucks atm) unless your A/h rating is so high that the winch isnt getting em to even break a sweat. you will get way more years out of your lead acid batts given the winching environment $ per dollar.
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