[glynnw]

I just purchased a used Dodd Audio EL-84 stereo amp, 15 watts,  and am unsure about what type of 12V battery to purchase to power it.  I have used a small 12V SLA battery to power a DAC, but this probably requires something a little heftier.  Any input is appreciated.

[Atlplasma]

I'm sure you'll get some good input here, but I suggest calling Gary Dodd. He will give you the best advice on using SLA 12 Volts to maximize the run time on your amp.

[stretchphoto]

Hi, Glynn.  I'm looking at the same amp.

Do you have any thoughts on the one you're now listening to?

Thanks.

 - Stretch

[jparkhur]

Power Sonic was what I was suggested and purchased..  100 AmpH battery.  I think it is the one Danny was using at RMAF.  You may not need one that big, depending on your usage. 

Some starting points

http://www.batteryplex.com/powersonic.cfm

Get the good charger too.  7000 series.

I got this one.. http://www.batteryplex.com/powersonic.cfm/m/PS-121000

I only have a Dodd Pre and Dac on the battery.  I have left the charger off for two weeks at times depending on use.  Little draw from these devices, amps different of course..

[HAL]

The PowerSonic 100Ah battery was giving about 8-9 hours of playtime before it started to sag at RMAF with the Dodd Audio EL84 30 watt monoblocks. 

[Atlplasma]

The PowerSonic 100Ah battery was giving about 8-9 hours of playtime before it started to sag at RMAF with the Dodd Audio EL84 30 watt monoblocks.

Was the battery on a constant charge?

[HAL]

No.  Recharge at the end of the day.

[TrungT]

My 100Ah battery just plugged and forget about it. 
Ctek 7002 charger.

[jparkhur]

My 100Ah battery just plugged and forget about it. 
Ctek 7002 charger.

I wanted to see if there was a difference, so I unplug it once in awhile.  JP

[glynnw]

Thanks for all the help.  I bought a 75aH SLA battery and a Ctek 7002 charger, after talking with Gary Dodd.  On this amp the battery charge lasts all day easily and I recharge at night.