Save $22.50 on Interstate Deep Cycle Battery - 12V 35AH SLA/AGM

KMan

Jul 19, 2020

7,445 Posts

Joined Nov 2006

Jul 19, 2020

KMan

Jul 19, 2020

7,445 Posts

Quote from Pi.314

:

thanks.

i keep killing my car battery because of the always on cigarette lighter socket.
i have my dashcam plugged it and sometimes forget to unplug it.

after doing that a few times, the battery no longer holds enough charge for me to start my car.
have replaced the battery twice in my 4year old car.

are there any deep charge car batteries? (yeah, alternatively, i can get rid of the dash cam.)

My mom's old Camry had a slow drain that kept depleting the battery if she didn't use it for more than a couple of weeks (she's retired and doesn't drive much, just the occasional shopping trip), and I had to keep boosting it. Each time this happened, the battery lost its charge-holding capacity a little. I could and should have solved the slow drain problem, most likely an old alarm system that no longer served any purpose. Instead, I installed a battery cutoff switch at the negative terminal, and that solved the problem. It resets the digital clock but everything else works fine. This might be the easiest solution for you, although you'll still have to remember to use it. Or, switch to a "smart" dashcam that automatically shuts off if the car isn't in use. Or, find a way to convert the lighter socket to turn off when the car's off. Or, install a plug-in or solar trickle charger/maintainer. Lots of ways to solve this problem.

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KMan

Jul 19, 2020

7,445 Posts

Joined Nov 2006

Jul 19, 2020

KMan

Jul 19, 2020

7,445 Posts

Quote from iceage2007

:

Will this work for goft cart. I need to replace all 8 of them. TIA.
edit: never-ending. it said NOT so in the picture.

edit: wait, then this guy included in the best battery here: https://products.bestreviews.com/...rt-battery

I'm confused now.

The product page specifically says it's NOT for a golf cart, so you have your answer.

GaleZhang

Jul 19, 2020

209 Posts

Joined Oct 2016

Jul 19, 2020

GaleZhang

Jul 19, 2020

209 Posts

Will two of these connected be able to replace the 24v battery used in the mower? TIA

KMan

Jul 19, 2020

7,445 Posts

Joined Nov 2006

Jul 19, 2020

KMan

Jul 19, 2020

7,445 Posts

Quote from sn_85

:

It depends on your type of use. If all you're doing is charging small electronics I think its fine. Keep in mind this is a lead acid battery so you can only run the battery down to about 50% before it'll drop voltage. Since it's a 35aH battery meaning you should get about 17aH out of it. Opposed to lithium where you can run it down to 100%. That along with how light weight lithium is, is why they cost so much compared to lead acid. Best thing to do is calculate the energy consumption of your devices. This size battery is comparable to the one in the Goal Zero Yeti 400W (non lithium) which is right at 33aH. If you build a battery box for it you could add a battery charger to hook up to the 12v of your car while driving and also a solar charge controller.

I run a 12v Dometic fridge in my 4Runner and have a dual battery system with two Northstar group 35 batteries. Both are AGM and are about 65aH each. They're connected to a solenoid which links the batteries when the car is on and both batteries are charged via the alternator. When the car shuts off and voltage drops then the batteries are disconnected automatically so I won't drain my starter battery and be stuck. I can probably run the fridge for about 1.5 days before it completely drains the battery.

I think this battery is fine for charging devices. However if you're going to be running something constantly off it like a fridge then you should at least constantly charge it with a maintainer or solar. Otherwise a bigger battery is a better option.

Isn't that the whole point of a deep cycle battery, that it can be run down, perhaps not to 0%, but certainly well below 50%?

2

MikeW1335

Jul 19, 2020

134 Posts

Joined Nov 2018

Jul 19, 2020

MikeW1335

Jul 19, 2020

134 Posts

Quote from TenderAlpaca802

:

I am looking battery for my Harley davidson motorcycle. I don't see any battery which can fit motorcycle.

Get a motobatt. They last forever. Made specifically for bikes. I got one in all my bikes never replaced even after 5 years.

leeterbike

Jul 19, 2020

1,666 Posts

Joined Sep 2014

Jul 19, 2020

leeterbike

Jul 19, 2020

1,666 Posts

These would not work well for solar projects as you need a higher AH for a larger capacity in order to store enough energy to get through the time without sun.

4

afrugalfather

Jul 19, 2020

2,329 Posts

Joined Jan 2012

Jul 19, 2020

afrugalfather

Jul 19, 2020

2,329 Posts

Quote from KMan

:

Isn't that the whole point of a deep cycle battery, that it can be run down, perhaps not to 0%, but certainly well below 50%?

Not without drastically reducing its life. If you want to go below 50% with any long term reliability go with Lithium.

5

1

sn_85

Jul 19, 2020

2,909 Posts

Joined Jan 2004

Jul 19, 2020

sn_85

Jul 19, 2020

2,909 Posts

Quote from KMan

:

Isn't that the whole point of a deep cycle battery, that it can be run down, perhaps not to 0%, but certainly well below 50%?

You can. However if you start discharging them below 50% frequently then the cycle and lifespan will be shorter. It's still not recommended to discharge a deep cycle below 50% for best battery health.

4

PADutch

Jul 19, 2020

169 Posts

Joined Nov 2012

Jul 19, 2020

PADutch

Jul 19, 2020

169 Posts

Quote from Pi.314

:

thanks.

i keep killing my car battery because of the always on cigarette lighter socket.
i have my dashcam plugged it and sometimes forget to unplug it.

after doing that a few times, the battery no longer holds enough charge for me to start my car.
have replaced the battery twice in my 4year old car.

are there any deep charge car batteries? (yeah, alternatively, i can get rid of the dash cam.)

Look into buying an Optima yellow top battery.

Designed for deep Discharge and starting. Pricey but cheaper the one tow.

Even if you don't start it in time it handles discharging to empty without damage.

https://shop.advanceautoparts.com...16080025-P

Also there is a device that cuts off power before the battery get to low to start. I know the brand name priority start but there are others. https://www.batterymart.com/p-pri...tTEALw_wcB

I've used both to ignore fixing a small drain issue.

1

afrugalfather

Jul 19, 2020

2,329 Posts

Joined Jan 2012

Jul 19, 2020

afrugalfather

Jul 19, 2020

2,329 Posts

Quote from leeterbike

:

These would not work well for solar projects as you need a higher AH for a larger capacity in order to store enough energy to get through the time without sun.

Depends on application, lots of lower power solar projects can run all night on this, or for some people the solar only needs to recharge a laptop or similar during the night and most of their energy draw is in the day. For me, I have this size battery in my solar system as I don't need the battery to do high draw all night. It all depends on what you are going to use it for, but to say it won't work for all solar projects is not correct, as in fact that is what this battery is designed for.

4

The1hangingchad

Jul 19, 2020

193 Posts

Joined Jul 2018

Jul 19, 2020

The1hangingchad

Jul 19, 2020

193 Posts

Quote from jjhyphy

:

Anybody thinking these are good for off grid system small diy home projects?

I have a similar one in my shed for LED shop lights and some string lights that go across the backyard. It works great - will light up the backyard for a few evenings but needs to be recharged after that.

pittmorall

Jul 19, 2020

39 Posts

Joined Aug 2016

Jul 19, 2020

pittmorall

Jul 19, 2020

39 Posts

Quote from Pi.314

:

thanks.

i keep killing my car battery because of the always on cigarette lighter socket.
i have my dashcam plugged it and sometimes forget to unplug it.

after doing that a few times, the battery no longer holds enough charge for me to start my car.
have replaced the battery twice in my 4year old car.

are there any deep charge car batteries? (yeah, alternatively, i can get rid of the dash cam.)

You can connect the camera to a power cable connected to the ignition ( radio red cable). The ignition will cut the power. I will add a fuse just to be safe.

jjhyphy

Jul 19, 2020

472 Posts

Joined Mar 2013

Jul 19, 2020

jjhyphy

Jul 19, 2020

472 Posts

Thanks for the replies. Yeah mainly the reason for the question is I have a shed in my backyard that is well built but to avoid installing attachments to the roof I just wanted to see if I could build like a 4 panel small awning with unistrut. It'll provide shade+ this can also provide power to the small shed which would solely be intended for a 20a circuit for shop lights and receptacle usage that the previous owner provided in the shed and is generator ready.

sr71

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Expert

This user is an Expert in Computers

Jul 19, 2020

54,336 Posts

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Jul 19, 2020

sr71

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This user is an Expert in Computers

Jul 19, 2020

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people have done this for years
Sears had the DualStart battery way back when
https://www.latimes.com/archives/...story.html

or spend a few bucks on a cutoff switch [bleepinjeep.com]

some marine batteries also hold up better or you can just connect the cam to a deep cycle directly

Quote from Pi.314

:

thanks.

i keep killing my car battery because of the always on cigarette lighter socket.
i have my dashcam plugged it and sometimes forget to unplug it.

after doing that a few times, the battery no longer holds enough charge for me to start my car.
have replaced the battery twice in my 4year old car.

are there any deep charge car batteries? (yeah, alternatively, i can get rid of the dash cam.)

KMan

Jul 19, 2020

7,445 Posts

Joined Nov 2006

Jul 19, 2020

KMan

Jul 19, 2020

7,445 Posts

Quote from afrugalfather

:

Not without drastically reducing its life. If you want to go below 50% with any long term reliability go with Lithium.

Quote from sn_85

:

You can. However if you start discharging them below 50% frequently then the cycle and lifespan will be shorter. It's still not recommended to discharge a deep cycle below 50% for best battery health.

I did a quick check and I'm reading that they can regularly go down to 20% without adverse effect. I mean, that's their entire reason for being, to be DEEPLY discharged. I'm sure that that life expectancy curve starts to drop once you regularly go below 50% discharge and if possible you don't want to go much below that regularly, but it probably doesn't really start to go south until you regularly go below 20%. For many applications, the only way to avoid regularly going below 50% is to either install more batteries, cut back on usage, or switch to a power storage method where deep cycling isn't an issue, like LiON, pumped hydro or compressed air, and for many applications, that's not feasible, or it's not necessary, e.g. the cost of switching to more resilient storage methods outweighs the savings of frequent replacement of deep cycle batteries.

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Rating:	(4.4 out of 5 stars)
Reviews:	109 Amazon Reviews
Product Description:	This Group U1 or GT9L non-lithium battery is sure to provide long life and dependable power for whatever the application you have - mobility, agriculture, lighting, or medical devices. The sealed DCM0035 (12 volt/35 AH) can be mounted at any angle and is cleared for air, surface or water transport. HCPCS CODE E2365
Manufacturer:	Interstate Battery
Model Number:	DCM0035
Product SKU:	B005CLPOQM
UPC:	656489188090
Shipping Weight:	23.8 pounds (
Item Weight:	23.8 pounds
Item model number:	DCM0035

Interstate DCM0035 12V 35AH Sealed Lead Acid AGM Deep Cycle Battery

$68

$100

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