AGM Batteries and Dash cams?

1move

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How would they hold up? I've heard a ton of mixed reviews ones say that they are terrible with dash cams and don't like the constant drainage (my dash cam stays on when vehicle is parked)

Thoughts? Opinions? Please share your experience. Don't want to sink in a bunch of money to something that is not going to work well. My dash cam has killed a regular lead-acid battery in three years (usually they say 5 year life span for a battery, up here in Canada)
 

Deacon

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Yeah the advantages of AGM aren’t really significantly different for deep cycle. But it depends on what you’re talking about. A dashcam is generally a low draw device, but left running long enough it will drain any battery. Devices with parking mode generally include voltage cutoffs so that once detected voltage (after any line loss) drops to a certain level it shuts off to keep it from dropping further. The advantage of deep cycle batteries is that they’re designed to be able to run down low and recharged and still function properly. But deep cycle batteries aren’t generally intended to deliver the same high amperage in short bursts like a starting battery.

So deep cycle batteries are used in travel trailers and golf carts and for electric trolling motors on boats, solar maintained gate opener batteries, etc, where you may need to be able to squeeze all the energy out of them and charge them back up again without hurting them as badly as you would a starting battery. But you generally wouldn’t replace a starting battery in your car with a deep cycle battery. Neither the battery nor the car’s charging system is really designed for that task.

Now, if you’re super hardcore about your dashcam in parking mode, you could get a big ol’ true deep cycle battery, mount it in the trunk, use that as your constant power (leaving accessory power still provided and switched by standard automotive circuits), and install it in the trunk with a lead off a sufficiently sized/rated switched circuit and a diode so that the deep cycle battery receives charge while the vehicle is running (without backfeeding power to the switched circuit) and then solely powers the dashcam during parking mode. An AGM design would be ideal for this kind of deep cycle application since you don’t have to worry about off-gassing like a typical led acid battery.

You could go even more hardcore and have a more complex circuit that runs the dashcam off the starting battery until it reaches a certain cutoff voltage, at which point it seamlessly switches power source automatically to the deep cycle battery in the trunk.

Most people don’t need to go through all that unless they’re super hardcore about leaving a dashcam running for long at a time while stored (parked without the vehicle starting and running normally), or just for the fun and challenge of it. There are existing prepackaged lithium ion battery solutions designed for this purpose, though, and they’re probably still cheaper (and way easier) than trying to homebrew something.
 
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thefrog1394

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IMO the better solution is to get a separate dedicated Li-Ion battery for the dashcam. There are plenty of purpose designed products like the celllink neo. An AGM battery will do better than a standard lead acid when it comes to full discharges, but any battery will degrade with battery cycles, and especially since you are up in Canada and already putting your battery through stress with winter starts, I'd give the car battery a rest. And it's way better to end up with a dead dashcam battery than stranded in a parking lot in below 0 temperatures with a car that won't start.
 
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TXLe

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If your talking about replacing your primary car batter with a single deep cycle battery(dcb), this will not work as your car will require a a higher cold cranking amperage that a DCB doesnt have. Look into a hybrid Optima blue top with gray body.

If it's about a 2nd battery with an isolator, disregard my response.
 

1move

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IMO the better solution is to get a separate dedicated Li-Ion battery for the dashcam. There are plenty of purpose designed products like the celllink neo. An AGM battery will do better than a standard lead acid when it comes to full discharges, but any battery will degrade with battery cycles, and especially since you are up in Canada and already putting your battery through stress with winter starts, I'd give the car battery a rest. And it's way better to end up with a dead dashcam battery than stranded in a parking lot in below 0 temperatures with a car that won't start.
I have looked at various other battery options external and what not and really have not gotten around to it. My main battery is crapping out as it is -37 Degrees C roughly -34.6 degrees F, the dash cam does take a small current but its enough to drain the battery below what was required for a start.

I got a decision made as interstate battery warranty was still in effect so I paid 45% of the cost for a new battery and just got it installed.
 

SquirrelMaster

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My car requires an AGM battery and I've had no issues running the dashcam. This AGM battery has actually lasted more than most other lead acid batteries I've used. I'd recommend staying away from optima batteries.
 

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I currently run 4 dashcams pretty much 24/7 with two Duracell 78TDAGMs in parallel (one in the trunk) with no isolator between them, and they've done a fine job the last 5 months. I have a bunch of other equipment I power with them through the work day and night too. Like a small invertor to power a motorized pan/tilt head, multiple charging devices, 12 volt fan, camcorder charger, phone chargers, high output Chromebook charger, etc.

I'd steer away from using a deep cycle as a starter battery. I tried that a couple years ago (with a Duracell SL34MAGM) and hooked up another deep cycle battery in parallel in the trunk with an isolator (so the engine battery wouldn't drain overnight), and that set up caused me lots of headaches after about 6 months (engine light coming on, fuel pump cutting out occasionally, ALPs throwing errors, less reserve capacity, needing more charging when I was at home). That engine deep cycle battery actually died in under a year. Those two deep cycles definitely didn't perform as well as these two starter AGMs do. And I was careful to put them onto an proper AGM battery charger when I was at home too, so it's not like I neglected them. While I don't expect the normal life out of my batteries because I use them so dang much (I'm happy if I get a couple years out of them) but less than a year for the starter battery protected by an isolator giving problems after 6 months is crappy performance. I'm completely steered off deep cycle batteries for my specific needs.

But for the 4 dashcams running 24/7 at all times when I'm on the road, two of these have been great:

Screenshot 2020-01-13 at 9.09.38 PM.png
 

1move

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Thank you guys for all the info and responses.
 

CobawLT2010

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If your talking about replacing your primary car batter with a single deep cycle battery(dcb), this will not work as your car will require a a higher cold cranking amperage that a DCB doesnt have. Look into a hybrid Optima blue top with gray body.

If it's about a 2nd battery with an isolator, disregard my response.
Optima sucks since Johnson controls bought them out... You’re better off with kinetik.
Post automatically merged:

Duracell’s are good as well. I get those from sams club...

I have never had problems with deep cycle batteries as my starting battery... using various types and sizes.
 
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Deacon

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Duracell automotive/industrial batteries are just rebranded East Penn (Deka) batteries. Very high quality products, and bonus they’re American made. I think that’s why Duracell went with them, good for the brand.
 

hiddencam

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Duracell automotive/industrial batteries are just rebranded East Penn (Deka) batteries. Very high quality products, and bonus they’re American made. I think that’s why Duracell went with them, good for the brand.
Probably why Sam's Club sells them and offers an impressive 3-yr warranty. Pretty good value at $139.00.
 

PointerCone

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Optima sucks since Johnson controls bought them out... You’re better off with kinetik.
Post automatically merged:

Duracell’s are good as well. I get those from sams club...

I have never had problems with deep cycle batteries as my starting battery... using various types and sizes.
I'd agree with you NOW about the Optimas, but back 15 years ago, they were all the $hit in batteries. I bought one for my sons V6 Honda Accord in October 2006 and it literally lasted until last month. Red top and got almost 14 years out of that battery. Most non-AGM, you're lucky to get 2-3 years out of them. Apparently the new ones are made south of border with inferior materials. I've always wanted to try the yellow top, as I've used the Red and BLUE (deep cycle) and they've been excellent batteries. Apparently the yellow top is a hybrid of a starting battery and a deep cycle that gives you a lot of draw time on it.
 

TeamQuack

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Duracell automotive/industrial batteries are just rebranded East Penn (Deka) batteries. Very high quality products, and bonus they’re American made. I think that’s why Duracell went with them, good for the brand.
The batteries from advanced auto parts also look very similar. I wonder if it is the same as well, just rebranded.

IMG_1237.png


Anyway, i used their AGM battery and it worked wonders, I absolutely loved it. my stock acura battery lasts 1.5-2 years. I run a dash, radar, parking sensors, and charge my phone and that load in itself eats my stock battery alive.
 

CobawLT2010

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I'd agree with you NOW about the Optimas, but back 15 years ago, they were all the $hit in batteries. I bought one for my sons V6 Honda Accord in October 2006 and it literally lasted until last month. Red top and got almost 14 years out of that battery. Most non-AGM, you're lucky to get 2-3 years out of them. Apparently the new ones are made south of border with inferior materials. I've always wanted to try the yellow top, as I've used the Red and BLUE (deep cycle) and they've been excellent batteries. Apparently the yellow top is a hybrid of a starting battery and a deep cycle that gives you a lot of draw time on it.
Hence why I stated since Johnson controls bought them out. I had a pre Johnson controls one that lasted up till about 3 years ago.
 

CobawLT2010

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Duracell automotive/industrial batteries are just rebranded East Penn (Deka) batteries. Very high quality products, and bonus they’re American made. I think that’s why Duracell went with them, good for the brand.
Deka batteries are great quality... I’ve used them many times on smaller car audio builds.
 

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