Energie ER1000 1000 Watt 12 Volt Power Cell

For some reason one of these can't smooth out 350 rms out of a 800 rms Class A/B amp, I thought just one would do it, but it didn't and no returns on Amazon for this product. I have the big 3 upgrade and am running 2 gauge wire, lights do not dim and I have steady 14 volts while driving playing music full blast, so the charging circuit is fine. I was hoping one of these would solve my dimming issue at idle but nope, guess I'll have to buy another one and see if that does it because one didn't do the trick.EDIT: After a few days and about 3 hours of driving it seems to be functioning better, I noticed an improvement and I will be looking into a battery relay to keep these topped off, I noticed the resting voltage of this battery and my main agm battery were matching, so they need to be separated to hold a higher voltage when off, to maintain a higher resting voltage on the audio batteries so more charge will be available. Will update again after adding the relay and second one of these units for a 1100 watt peak, 825 rms amp running a 350rms 750 watt peak 12 inch subwoofer.EDIT #2: Batteries seem to be working well. 14.4 volts charging, 13.5v on the audio batteries and the main battery stays at 12.9v. Still need to charge them more, but the relay is functioning perfectly now and keeping the resting voltage higher than the main battery.If you are shopping for these, go off the peak voltage your amplifier can make 2 of these seems perfect for an 1100 peak watt amplifier, because it is rated for 1300 watts now with 2 of them.

For the price, these power cells are perfect. I have two, 800 watt Skar amps (one for each sub) and these things keep my electrical running strong and without voltage drops. Made a custom bracket so I could mount them to my sub enclosure and saved a ton of space. Pull the trigger and pick one (or more up.) I suggest 1 per 1000 watts RMS.

Great for the price. I was missing the connective screw when I opened box. I was mad but since I had the sam battery prior I removed it from old battery. It’s a decent audio battery

When the battery first arrived, I was very surprised at how small it was, so I was not very confident or optimistic that it would have the power to solve my headlight dimming. I was pleasantly surprised though. My headlights were dimming very badly with my system, pushing a little over 1000 watts, but since hooking up this battery, no headlight dimming and no voltage drops.

Wow.. This little battery packs a punch!.. I honestly wasn't expecting much, especially for the price, but wow. My apm kept cutting out ALL the time as soon as the bass hit. I upgraded the wires from the battery and ground, No difference, I added a capacitor, No difference.. I decided to give this battery a try.. BOOM.. the bass hits hard and the amp doesn't flinch.. I was even able to crank up the settings on the amp.. I'm very happy with this battery and strongly recommend it!

Negative terminal pulled out of the battery as soon as I started tightening it.not impressed at all.if anything changes after this review I will update my review to reflect that

bought 3 of them. have them ran parrell with ds18 5 cap. keeps my volts above 14. even on the lowest of hits. systems p pulling about 3800 rms.

Worked fine for about 2 weeks but them my amp started going into protection mode and sounded like I blew my subs. After switching subwoofers and amp the problem didn't go away so I took the battery out and the problem was fixed. Subs and amp still work battery however I highly doubt it. My amp is power hungry so I gave it a 3 just to be nice since it did work well (for 2 weeks) I think it just wasn't strong enough.