Hello, thought I would post an answer, as I have a Sennheiser VMX100 too.
You can contact Mina Zhao, via AliExpress. She sells the 522020 model for U$3.40 plus U$4.42 postage. You can buy 1-piece or bulk. Here is the link ... http://www.aliexpress.com/item/L044-3-7V... (03 FEB 2013)
Also, Green Energy Tek sell the original. Their link is ... http://www.greenergytek.com/info-3970554... (03 FEB 2013).
You can contact them here:
Tel: (86)-755-2937 1695 (Daniel)
Fax: (86)-755-2937 1615
info@greenergytek.com
You should not be paying more than U$12.00 for this item, they can supply 1,500 per day.
Update (10/02/2013):
eBay (http://www.ebay.com/itm/Li-Po-Battery-3-...)
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Today, 19/02/2013; I can say that the VMX-100 works 100% once again. I purchased a Li-Po Battery 3.7V 140mAh LiPo for Micro Helicopters from walkera-esky [[http://myworld.ebay.com.au/walkera-esky]]. The battery will fit and only costs U$5.99 + U$3.75 in postage. It comes fully charged, so simply unsolder the 2x RED and BLACK wires and resolder the new battery in place - and you're DONE!
So if you have a Sennheiser VMX-100 and you need to replace your battery. You can buy HERE:
Walkera-Esky
351 Oak Pl
Ste C Brea, CA 928214123
Hello,
Firstly, I removed the casing, which means that the single screw under the sticker at the bottom of the VMX-100 had to be removed. Secondly, I took a photo with my iPhone of the connection, so that I did not reverse the polarity and reconnect the new battery incorrectly. Thereafter, I removed the battery by unsoldering the RED and BLACK wires that are connected to the motherboard/mainboard. Lastly, I re-soldered the new battery, according to the photograph I previously shot.
The VMX-100 immediately springs back to life, as the battery has residual charge. One can now use the VMX-100. I chose to fully charge the Lion battery and since I last made this post, that is to say from 19/02/2013 to today, 01/03/22013; the VMX-100 is still on that initial charge.
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Hi, did you replace your battery? if so where did you get a new one. THKS
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