battery power supply for classT/D amp

[soundnovice]

I am looking to powerup the T-amp (TA2021) with 12V-14V/5A capable battery pack. anybody tried to power using batteries? what type of batteries are good from audio point of view? any battery management diy kit/PCB available?

 

[Mooly]

12 volt gell type lead acid batteries are pretty good all rounders being cheap and rugged.

A constant voltage charger with a current limit is all that's needed to charge them... it doesn't come much easier

Do a google search for " Yuasa little red book of batteries"

 

[oz7aff]

I have build a small amp with a 12V/7.2Ahr gel/lead battery.
I used a ready made charger because it was wery cheap.
There is a lot of hours of playing in a battery of that size,
and I think that size has the best overall cost.

 

[soundnovice]

12 volt gell type lead acid batteries are pretty good all rounders being cheap and rugged.

A constant voltage charger with a current limit is all that's needed to charge them... it doesn't come much easier

Do a google search for " Yuasa little red book of batteries"

thanks for the tip!

 

[soundnovice]

I have build a small amp with a 12V/7.2Ahr gel/lead battery.
I used a ready made charger because it was wery cheap.
There is a lot of hours of playing in a battery of that size,
and I think that size has the best overall cost.

nice build. which amp is that inside?
any link for the intelligent battery charger?

 

[thunk303]

Just when I am looking for a battery/charger solution for my 2020 up pops a thread. Not to hijack the thread, but I need to fit mine in a 50 x 150 mm space. Are RC battery packs/chargers suitable?

Dean

 

[KMossman]

Are RC battery packs/chargers suitable?

What type are they........Ni-Cad's, NiMH, Li-Ion and Li-Po battery types are used to power RC models.

 

[Saturnus]

What type are they........Ni-Cad's, NiMH, Li-Ion and Li-Po battery types are used to power RC models.

And more recent and modern types that RC enthusiasts use are LiFePO4 and LiFeYPO4 types (not to be confused with li-po which just stands for lithium-polymer and is just another way of packaging standard li-ion batteries) that although being less energy dense than li-ion is superior in every other way having 1000s of cycles (up to 7000 cycles with only 15% degradation), much higher possible charge and discharge rates than any other battery type, completely environmentally safe, and last but not least thermal run-away being completely impossible due to it's very nature.

 

[thunk303]

Would these new LiFeP04 be any good in regard to SoundNovice's original question of offering better performance in audio terms?

And is there a quality battery management diy kit/PCB that anybody would recommend?

 

[oz7aff]

nice build. which amp is that inside?
any link for the intelligent battery charger?

The amp is a 2 X 15Watt Class-D Stereo Power Amplifier Kit - TPA3122

2 X 15 Watt 8 Ohm Class D Audio Amplifier DIY Kit - TPA3122 15W Stereo Amp | eBay

The charger is bought by Biltema, a Swedish Compagny with stores in Denmark.

Batterioplader 12 V, 2 A - Biltema

But I think it can be bought under another name other places.

 

[soundnovice]

something like this be used?
Belkin Residential Gateway (RG) Battery Backup - REV B | Battery Backup - UPS | Power | Products | Belkin USA Site

it has got automatic battery charging system with indications etc. and uses 12v/7.2Ah SLA battery.