TA2024 battery and power supply

[CanuckFritz]

I'm a newbie and looking for some advice on a project. I am taking a vintage radio and replacing the old components with a TA2024 amp, bluetooth module, 2x 4" full range 4ohm speakers. I would like to be able to run this with a battery so its portable, but be able to charge the battery with a standard power supply and still play it while charging. Can anyone give me some advice as to the best battery (would a 11.1v lipo or 12.8v liFePo4 ~2000-3300mAh have enough power) and also what I can use for a charger with this configuration? I'd rather not have to tote around a smartcharger, so would a standard 12VDC, 2A regulated wall charger work?

 

[CanuckFritz]

Just bumping this up!

 

[lutkeveld]

No, you need a charger. You can get balance chargers that run on 12v. Split the 12v to the amp and charger.
When using a switched DC socket (3pins) the connection from the battery to the amp will be cut when the boombox is plugged in.

 

[CanuckFritz]

Thanks!

Do you think this battery/charger would work?

http://www.amazon.ca/gp/product/B008UKKXRC/ref=ox_ya_os_product_refresh_T1

 

[CanuckFritz]

Also, do you know if there is a wiring diagram/schematic for a setup similar to what I am trying to do?

 

[lutkeveld]

Barely, it probably won´t even turn your amp on because of the start up current. And if it would, it won´t last long. Get a lithium pack from Hobbyking. How long are you wanting to play on one charge?

I don't think there is a wiring diagram available for this setup. I can 'paint' one together if you want. Try it yourself first.

 

[CanuckFritz]

I'm hoping for a few hours of play time per charge, but would also like to be able to charge and play at the same time. What about this battery?

Cheap YSD-12450 12V 4500mAh Rechargeable Lithium Battery

That would be awesome if you could paint up a diagram. This is my first run at a project like this and any help would be amazing.

 

[lutkeveld]

Same story. As for parts (example)
Charger: Radio Control Planes, Helicopters, Cars, Boats, FPV and Quadcopters - Hobbyking
Battery: Random lipo, preferably from a known brand
DC in socket: New 10pcs DC Power Outlet DC 022 Diameter 5 5mm Inner Pin 2 1mm 5 5x2 1mm Ry | eBay

Try to come up with a diagram yourself first.

 

[CanuckFritz]

Thanks Lutkeveld!

That charger looks like its small enough, and the price point is excellent. I can pick up the DC in socket at RadioShack (The Source here in Canada).

As for the lipo, what specs should I be looking for? 11.1v.....?

I will work on a diagram and post it once I have it done.

 

[lutkeveld]

3 in series (3S), with li-ion having a cell voltage of 3.7v that will be 11.1v indeed.

For capacity: take the time you want to play on one charge and multiply it by 0.35 (power usage TA2020 on full volume). That will be your capacity in ampere hours (Ah).

 

[CanuckFritz]

How about this one? Is there a discharge rate that I need to be mindful of when looking for a lipo for the TA2024?

Buy Replacement 11.1V 30C 4500mAh Lithium Battery Pack for R/C Helicopter

 

[lutkeveld]

Try to get your lipo in your own country because of internatinonal shipping problems. Look for known brands as Turnigy, Zippy etc. TA202x draws 5A peak absolute max, so almost all RC packs will do the job.