We are continuously testing all of our batteries to see if they charge every cell phone and are trying to expand our collection of phones for our testing lab.

If you have an old (but made within the past few years) phone sitting in a drawer and it turns on, send it to us! The newer models are best, and the most important thing is that it can turn on to indicate it’s charging. We’ll cover your postage and give you a $10 coupon towards your next purchase. Max 3, not combinable with other offers.

Our address for old phones is:
Voltaic Systems
155 Water Street
Brooklyn, NY 11201

If you’d like payment for postage, just include your PayPal address with your phone and we’ll send you payment and coupon code as soon as we get it. We’ll cover up to $4 USD in postage.


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6 Responses

  1. Gerwin Legaspi

    To whom it may concern:

    I am interested in both your take back (for my old voltiac backpack so I can upgrade) and this old cell phone program. However I am in the military and am currently living in Japan. I noted that on the program discription it states to not send from outside the US. I am currently stationed in Atsugi NAF (Naval Air Facility) in Japan and have an FPO AP address. Considering that FPO AP address is always written in as within the United States. I would like to know if I am able to send my old voltiac backpack so I can upgrade to a newer model as well as one or two of my old cell phones (I currently have five to myself but am only using one… lol, I just never throw them out) from my FPO AP address. If this is not possible please let me know. You may send your reply at my military e-mail address: ***redacted***



  2. Luke

    Hi Voltaic,

    Is this cell phone program still ongoing, and if so, how many can you send in? Me and me friend collectively have about a dozen(ish) phones and we would love to help you guys get a good range of phones to sample with, but didn’t want to be restricted by a cap.


  3. Danielle

    I was wondering if this program is still active. I’ve got a couple fully functioning cell phones lying around that I’d love to trade for $10 off your awesome products.

    • admin

      Hi Danielle,

      It is still active. Just one caveat, it can’t be used with sample products or with any other promotions. Limit 3 phones. /jeff


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