XS Power D3400 3300 Amp AGM Battery with M6 Terminal Hardware - 12 Volt 80Ah 1150CA Deep Cycle AGM Powercell for Winch, Car Audio Systems - 49.97 lbs, Maintenance Free, Sealed Design

Installed this to accommodate a total of 3200 RMS between 1200 RMS mono block amp/ 4 ds18 door speakers 6.5" and 2 10" kicker L7 along with 2 tweeters. I did also upgrade alternator to 250A same belt pulley class... And Big 3 upgrade. Best battery Ive ever owned by far. Work every penny.

This battery works great added some juice to my system and takes some weight of my alternator

Very solid,

I have a small SUV (2005 Escape) that I use to do a ton of the grid camping. This battery perform solidly year round and never complained about me needing to steal it's power to run other overnight accessories: included running a power inverter and operating/charging multiple laptops or a fan that has a really high power on draw. The vehicle could remain parked in below freezing temperature for weeks at a time and have no problems.NOTE: I REALLY was tempted to give this a 4 star rating as almost 3 years to the date, this battery died. I purchased the battery January 2016. Leading into winter of 2018, I noticed the vehicle starts were slowing down. Alas the vehicle was out of commission over the winter (end of November) and was not started for 3-4 months (beginning of March); at which point the battery was so dead there was no reviving it (tried charging, but seems there were several cell outs, it never could reach over 12v). So, I know the battery was starting to get a bit tired, but I can't say for sure how much life it really had left (3-4 months with weeks at below freezing could have zapped any stalwart battery)...

I got this running on two Alpine Type R Subs w4s and another Alpine amp 4 channel and it's running everything great with a battery isolator but everything is running perfect great price fast shipping good quality

I mean its a good battery.. at first i was not sure but i guess its normal for a battery to sit at 12.8. I was hoping for it to be nearly 13 volt at full charge since its a AGM Xs power, and i also seen other reviews people saying it sits around 12.9 / 13.0. Mines just sits at 12.7 / 12.8. I do know a normal lead acid battery 12.8 is a good sitting voltage also full charge voltage. Ill see how this battery does a few months from now.Update- i had a feeling this battery sucks! They are a hit or miss. After 4 months battery looses charge. It sits at 12.7. Turn the ignition on and rapidly voltage drops to 12.2 / 12.1volts. No good! Never again will i spend a dime on this brand. Ill stick to Everstart. Cheap but those battery will last 4 to 6 years faithfully

Using a smart bass 3 and two AB xfl 12s. I read so much about how anything over 2k needed alternator upgrade, etc. But I gotta tell you.. I turn the volume up to clip, which on these subs is dang loud. And my voltage stays at 14.7. I thought my volt meter was broken. Then finally it began to dip super hard. To 14.4 lol. So I'm like wow, I think I can run all 4k of my power on stock electrical with just this one battery. Maybe if you run your system nonstop while driving, you will eventually run out of juice. But for me, I only play the music loud maybe a half hour at a time and the rest is probably pulling maybe 500w tops. Just at everyday listening volume. So for me, it's been awesome. It gives me the power when i feel the need for it, voltage stays strong and no dimming unless I really go crazy and even then it is only the trunk lights and dome lights, the headlights aren't really noticeable. This is on stock electrical so I'm even surprised that it does this well. Before this battery, no chance I was doing more. I was on 1200w and it was dimming like crazy. So not only am I on triple that power now, but the dimming is barely there. And the voltage appears to be extremely strong. This battery is really powerful. To hear the power from this setup and know most of it is coming directly from this battery is extremely impressive.

XS Power batteries may seem a bit pricey, but they are worth every penny.I have this battery paired with a high output alternator to run a ~6kW rms sound system in my 2017 Jetta. I’ve had absolutely no issues with dimming headlights or anything relating to excessive power draw.