Rechargeable D Batteries + Solar

[Barrys_Bapz]

For many years now I've been meaning to invest in some quality batteries the main criteria I have is a very high capacity 11000 so I can run for long periods 2/3 days full charge.

So I've come across these batteries.
http://www.ebay.co.uk/itm/4x-11000mAh-Ni-MH-D-Size-1-2v-Rechargeable-Battery-Batteries-Pack-K204/281182143259?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222003%26algo%3DSIC.FIT%26ao%3D1%26asc%3D22703%26meid%3D7707967724671725471%26pid%3D100005%26prg%3D9178%26rk%3D6%26rkt%3D6%26sd%3D370528584980&rt=nc

I was thinking about trickle charging the batteries with a 12v solar panel just in my car window,
https://www.youtube.com/watch?v=PfsB7HjrQhs

It's possibly going to be pretty expensive to start off but I hope this will make me self sufficient with power on the Boombox, don't get me wrong I love Duracell D batteries but I probably spend well over £500 on batteries.

Anyone's advice, or experiences let's get Booming!

 

[Lasonic TRC-920]

I'm really interested in hearing how this works out. I have a few solar panels, a 12" x 12" and a 12" x 6". I also have the big Harbor Freight 12" x 36" on top of my camper. That one is enough to charge 2 12v batteries that are in my camper.

 

[redbenjoe]

make sure the solar system has an auto peak monitor -
so you cant overcharge // explode your $$$ batteries

 

[Beosystem10]

Bear in mind that some boxes - my Technics SAC05L springs to mind - will struggle to run on 12V if they were designed for a 15V supply, so ten of these would give you 12V, eight would give you 9.6V. I'd avoid that particular source too, I had some AAs that were supposedly 2.6AH but the first thing I noticed was how light they were compared with Uniross. Then they wouldn't take a charge at all so I got the money back through paypal and the seller didn't want them back. On handing these over to the chemistry department at my work, they were found not to be NiMH at all but in fact NiCad ones and from the content, the lab tech along there worked out that they'd maybe have had a capacity of around 200mAH at best, had they even worked. Stick with Uniross, Rayvac, Panda or another well established brand, none of the HK sellers' stock is worth the risk.

 

[Barrys_Bapz]

I've been reading and most D batteries run at 1.5 volts, Looking at the specifications.
Power type and voltage Line / Batteries (any type) / 220/ 10 x 1,5 Volt
So the eBay batteries I was looking at are Ni-MH 1.2v So if they're in the back of the boombox daisychained the voltage would drop, So I'm thinking of getting 1.6v batteries now to deliver a solid power source.


The new NiZn rechargeable (nickle Zinc) batteries which give a voltage of 1.6 volts. So there shouldn't be much voltage lost in the links in the battery compartment. The only issue is I am unable to find D size versions, so I'm considering using this adapter.

One good thing about these covers would be no more corrosion eating up the side of the battery bay.

I just Wanna make the right And informed decision I would really love to have the best of both worlds high-capacity and deliver the boombox the juice it requires, cheap batteries do sound crap. But I really do not have a lot of money so reasonable price also.

 

[Barrys_Bapz]

Would anyone know if I used the 1.6V batteries would it blow the boombox? because the voltage is to high? or do you think they can handle it?

I've heard of some stories where flash light bulbs blow with 1.6v batteries.

 

[Transistorized]

You can have more Amps than required but higher Voltage than designed and wrong polarity (without diode protection in the electronic device) is a bad thing. For example if you have a device requiring 12Volt and 1.2Amps, you can replace the power source with 12Volts and go as high as you want for Amps but not go under 1.2 Amps and it will be fine......but too high of voltage even with correct amps will cook the device.

The device will only pull the amount of amperage it needs but higher voltage crams it down the devices throat causing damage.

Voltage=speed / flow of current

 

[Barrys_Bapz]

This is a lot harder than I thought.. With those 1.6v batteries I wouldn't know the implications of that extra point of a volt would have on the boombox and especially as these boomboxes are getting rare and very expensive.

I just had a battery leakage on my 9090 and the inside was all corroded but I got it fixed, but its a pain in the ass. Definitely the bottleneck in boomers is the batteries.

NiZn's sound pretty awesome and with the adapters x10 + 20 NiZn's there is collective capacity of 56,000mwh That is if the labelling is accurate on these batteries and that pretty modest compared to some.
http://www.ebay.co.uk/itm/20-Pcs-AA-2A-LR06-2800mWh-NiZn-1-6V-rechargeable-battery-Ultracell-/400730135080?pt=UK_ConsumerElectronics_Batteries_SM&hash=item5d4d609a28

These are £40.85 for 20, but I'm not too sure how long it would last in real-world use.

 

[Barrys_Bapz]

I would love to have a conclusive answer for anyone considering this route, but tomorrow I'll call in to a battery dealer and see what options I have, I may get a custom battery for my booms. But I don't want to replacing the batteries is part of the ritualistic act of booming.