... anyone here know someone in the LA/ SoCal area I can contact?

Thanks, much appreciated!

Flotrain

Again, great info and thanks Matt for the safety warnings with lithium batteries... I wasn't aware of the potential danger.  I checked out the Crate "Taxi" amp on Youtube. This uses a fairly large 12V 7AH battery... you can see it here: http://www.youtube.com/watch?v=AMHqqegHWjM 

The Crate is not expensive but the sound seems to be geared toward acoustic players or semi-clean playing... couldn't find any videos or clips of screaming solos! That's what I like about the little Marshall-- it behaves like a Marshall: cleans up when you roll the guitar volume back and you can dial in some pretty convincing solo and chunky rhythm tones.

I don't need much power.. a Ruby style amp is almost enough- it gets a balanced sound with an efficient speaker and enclosure (... plays for hours on a 9volt battery! :tu:)  I think an amp around 3 to 5 watts would be plenty... then maybe I could get away with a smaller battery pack..  any suggestions? 

Thanks for all the info and insight Matt... the Hurricane is cool!  I'm curious about the "Big Muff tone control".  Do you mean you used the same circuit for the tone control as the tone control on a Big Muff π pedal?  I put together a Ruby type amp in a box with a 5" speaker- 9 volt battery powered.. just using plans from the web.  That amp sounds great but if I can get a little more output plus gain/ tone control like the little Marshall I'm messing with that would be sweet!   Battery power is essential for my purpose... that's why I'm trying to learn what is possible with rechargeable batteries.  Any other thoughts/ suggestions much appreciated... 
Joe

... just saw your posts Kaz and Enzo—  thanks!  yes that looks a bit out of my league... beginner.

Hello armstrong and Enzo.  I'm considering Enzo's idea about running the whole thing off 15 volt rechargeable (I don't need full output power for my purposes).
Would this battery work?  How much "play time" could I expect?  Here are the battery specs.. again thanks much for your help! 

Specifications:

    * Li-Ion Size: 4 x 18650 (cylindrical)
    * Capacity: 2600 mAh
    * Chemistry: Lithium Ion (Li-Ion)
    * Working Voltage: 14.8v
    * Peak Voltage: 16.8v
    * Cut off voltage: 11V
    * Max Charging Current: 2 Amp(1C)
    * Max Discharging Current: 5 Amp (2.5c)
    * Included Qty: 1


Dimensions and Weight

    * Length: 2.9"
    * Width: 2.5"
    * Height: 0.8"
    * Weight: 6 Oz


Features:

    * No memory effect
    * Longer storage life then NiMH Batteries
    * Light weight and higher energy density than any rechargeable battery
    * Installed IC chip will prevent the battery pack from over charge and over discharge. It helps protect battery chemistry integrity and prolongs battery life.
    * Installed polyswitch will cut off power if battery discharging current more than 5 Amp.
    * Perfect for building up battery pack for RC air, car, and robot which requires compact size and lighter weight
    * The battery module is wrap by PVC shrink and with 20 G wire

Thanks Roly, Enzo and Armstrong!  Question answered  :dbtu:

Hello!

Is it possible to convert a low wattage mini amp like the Marshall MG10CD (10 watt) to battery power?  I don't mean a car battery and inverter-- I mean bypassing the main wall power and supplying the correct operating power directly to the circuit board from a rechargeable battery pack.  What is range of internal voltage through the circuit of small ss amps like this?  Cheers and thanks for the help!   8|