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Old 7th July 2016, 12:08 AM   #1
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Join Date: Oct 2015
Default Help with batteries for Blutooth Player

Hello all,

I need help with the battery's for a bluetooth player for my wife's birthday. I want it to be portable as possible. I need to supply 24v @ around 6amps using batteries. The ones I am thinking of are below:

Tenergy Industrial Grade D Cell Rechargeable NiMH Battery 10000mAh
Specifications: • End volt of discharge: 1.2 V • Maximum discharge current: 5C

I was thinking I needed to wire them in series as well as parallel. I don't know how many of these I would need though. It will be a 2.1 system with 2x "Tang Band W5-1611SAF 5" which are 28w RMS and 90db efficient, and possibly one Dayton Audio DCS205-4 8 which is 150W and 88db efficient. Another sub I could use is the Tang Band W6-1139SIF which is 50w and 83db efficient.

I am thinking I would need a voltage doubler circuit inbetween the batteries and amp to raise the voltage and lower the amps out to the amplifier. I am reading books on building circuits like crazy and this stuff isn't getting easier yet for me. Any help would be great.
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Old 7th July 2016, 01:57 AM   #2
DUG is offline DUG  Canada
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Join Date: Jan 2003
Location: mississauga ontario canada
Originally Posted by benniehanas View Post
Tenergy Industrial Grade D Cell Rechargeable NiMH Battery 10000mAh


But in the description it says: "The 5000 mAh capacity offers robust performance under load."

Good luck.

There are 12V to 24V boosters on e-bay...they have been mentioned somewhere in DIY...possibly in the boominator thread.

Actually the boominator thread should be where to look for ideas.

Getting 144W out of D cells might be a stretch.
Doug We are all learning...we can all help
"You can't stop the signal, Mal. Everything goes somewhere..."
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Old 7th July 2016, 02:19 AM   #3
AllenB is offline AllenB  Australia
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I think that efficient speakers are worthwhile here.
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