Malkoff
Results 1 to 18 of 18

Thread: Outdoor speaker takes 8 D batteries: getting expensive

  1. #1

    Default Outdoor speaker takes 8 D batteries: getting expensive

    My wife is a personal trainer who leads boot camps outdoors. She uses an outdoor speaker we got at Brookstone to play music from her iPod. It's loud, sounds great, and lasts a while before going dead.

    The problem is that replacing the batteries is getting expensive, now that she uses it 15 hours a week. She is too far from power for an extension cord to be reasonable. So far, I have just been using grocery store Energizers and Duracells. Is there a better way?

  2. #2
    Enlightened
    Join Date
    Jul 2011
    Location
    West London, UK
    Posts
    25

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    Quote Originally Posted by GulfCoastToad View Post
    My wife is a personal trainer who leads boot camps outdoors. She uses an outdoor speaker we got at Brookstone to play music from her iPod. It's loud, sounds great, and lasts a while before going dead.

    The problem is that replacing the batteries is getting expensive, now that she uses it 15 hours a week. She is too far from power for an extension cord to be reasonable. So far, I have just been using grocery store Energizers and Duracells. Is there a better way?
    Rechargeable D cells and an 8 bay charger such as the maha C808m? Possibly Tenergy cells would be worth a look from what I've read on here.

  3. #3

    Default

    I will look into those items. It's essentially gonna boil down to cost. At some point, it's going to make more sense for me to buy a new speaker, powered by an on-board rechargeable battery.

  4. #4

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    One of those 12VDC jump packs with an adapter cord from the jump pack's cig lighter outlet to the power inlet (assuming there is one) on the speaker.

    She can recharge the jump pack from the car's cig lighter outlet going/coming if she needs to do so.

  5. #5

    Default

    That is a great idea. Yes, the speaker has a power input.

  6. #6

  7. #7

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    Yep.

    Nice 17 ah battery on that one.

  8. #8

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    Ok, new question. I've just read that Sanyo Eneloops can be used with a D cell spacer. Would this work for my application? How do I tell if this will provide enough juice? I know very little about batteries.

  9. #9
    Flashaholic ToyTank's Avatar
    Join Date
    Sep 2011
    Location
    Your Momma's house...
    Posts
    300

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    The problem with eneloops here is you'll need the adapters and then you have D cells that are only 2000mAH instead of 10000mAH. I assume the unit uses 12V(8x1.5V cells)so another option would be to Rig a 12V source(car battery, 12V solar panel, li-ion, nimh, or sla 12V cordless packs, etc.

    Edit: Yeah your on the 12V idea
    Last edited by ToyTank; 09-13-2011 at 10:10 PM.

  10. #10

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    Here is what you can do.

    Dealextreme SKU 7031. These are 2x AA to D adaptors. A regular D battery has a capacity of 10ah. An AA eneloop is 2ah. For every adapter you use, you will have a capacity of 4ah. These adapters run in parallel so you do not have to worry about voltage.

    A total of 16aa eneloops ->> 8D's ->>> 32ah ->>> 9.6 volts

    Dealing with that many AA's could be an issue for you, though.

  11. #11
    Flashaholic gearhead1972's Avatar
    Join Date
    Mar 2011
    Location
    Kent, NY
    Posts
    154

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    I would without hesitation go with a jump pack, it will play that thing for days without a charge. Plus you can jump start the car if need be, and charge cell phones in a power outage. http://www.northerntool.com/shop/too...2357_200422357 little bigger battery and cheaper.

  12. #12

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    Quote Originally Posted by gearhead1972 View Post
    I would without hesitation go with a jump pack, it will play that thing for days without a charge. Plus you can jump start the car if need be, and charge cell phones in a power outage. http://www.northerntool.com/shop/too...2357_200422357 little bigger battery and cheaper.
    That one doesn't provide AC power, as far as I can tell.

  13. #13

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    If the portable speaker has a DC input jack (I assume 12VDC) she can get the a DC power cord (cig lighter to whatever plug size fits that input jack) from Radio Shack (if it requires AC just get an inexpensive inverter that plugs directly into the cig lighter outlet)

    Since that Northern Tools jump pack also has two 12VDC outlets she can also get a USB adapter (12V to 5V USB port) for the other cig lighter port and use that to keep her iPod charged.

    Plus it can recharge via the car's cig lighter outlet while she's traveling between gigs.

    Quote Originally Posted by GulfCoastToad View Post
    That one doesn't provide AC power, as far as I can tell.

  14. #14

    Default

    I looked last night and the bottom of the speaker says 9V DC. Does that change these recommendations? Here's a pic.

  15. #15

  16. #16

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    9vdc would probably require a convertor from 12vdc as I am not sure it would run off 2 lithium ion batteries in series for a max of 8.4v.
    Fenix Split rings 1400+ sent, SWIVELS now available also!
    Psalm 112:4 Light shines in the darkness for the godly. They are generous, compassionate, and righteous.

  17. #17

    Default Re: Outdoor speaker takes 8 D batteries: getting expensive

    You want the Velleman CARS2000 adapter - rated high-power (2A) like your AC adapter.

    (cheaper ones are only rated to 0.8A)

    Around $20 online plus shipping.

    It is an adjustable voltage adapter - just set the dial to 9V, select the right tip (comes with several) and verify the polarity (not clear in your photo, but most are center positive)

    And as I said before if you pick a jump pack with two outlets also pick up a 12v to USB outlet adapter so she has the option to recharge her iPod at the same time.
    Last edited by ncbill; 09-25-2011 at 10:58 AM.

  18. #18

    Default

    Thanks for all the suggestions. We ended up going a different direction, and buying a new speaker that puts out more sound, charges the iPod, plays for days, and plugs into the wall to recharge. Goodbye, D batteries. You will not be missed.

    http://www.amazon.com/gp/aw/d/B000I5...dir_mdp_mobile

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •