Pallet of mixed Anton Bauer Ni-MH and Li-Ion - Great Resale
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Product Weight: 375 lbs
Pallet Weight: 415 lbs
Pallet Dimensions: 48" (D) x 40" (W) x 18" (H)
Ok get ready for a long description. The first part is regarding the 14 larger batteries, 2nd part is regarding the 30 smaller batteries. There are some other batteries mixed in but the 2 mentioned below are the ones that are high value if you want to repair them. Sorry for the long description but I took a lot of time to write it out in the other listings and just copy and pasting that into this auction because it is a mix of both Anton Bauer batteries. I separated the 2 descriptions by dashes. Also I added a lot of photos.
If you google Anton Bauer NM-38 you will see these batteries are going for over $2000 each. I know for sure that most of our customers have the knowledge and ability to rebuild these. Most of the cells in these packs are good and they are super easy to rebuild. All you need is a spot welder and something nickel. Break down the packs, test the cells, rebuild them into new packs. You will be able to rebuild most of these packs if you wanted. Or just build yourself a powerwall. The majority of these packs have a few bad cells in them.
Each module comes with a metal case that measures 8.25" x 6.25" x 5". These would be perfect to reuse too if you just wanted to build a packs to fit inside.
Each module is made up of 4x smaller 14.4v 12ah 172.8wh. Each pack has 36x 1.2v 4ah cells. Each 36 cell group is actually 3x 12s groups of cells. Those 12s groups are then paralleled only at the main positive and negative groups. Not for each series. So when you look at the nickel layout remember I told you this. There are 3x 12s 14.4v 4ah cell groups and only the 3 main positive and negatives are paralleled. Not each series of cells within the 12s groups. When you rebuild my suggestion is to convert the 3x 12s1p groups into 1x 12s3p group.
In my opinion, if you rebuild these packs, rebuild them in 12s3p where you parallel all the series groups as well like you would with lithium ion batteries, it will be more stable. With Ni-MH, most batteries (like this one) don't use a BMS to monitor every series group of cells. You can reuse the BMS which comes with heat detection and over/under current and voltage protection and only connects to the main positive and negative. I really think these packs are having issues because of the lack of paralleled series groups. One cell fails and it starts a 3x faster chain of faults with the other cells in that pack. Having the modules in 3p will slow down that cascade of cell failures and the batteries should last longer.
Each module weighs 20.2 lbs.
On the top of each module you will see the voltage. We checked them for you so you know what you are getting. Most cells are resting near 0.85v and most packs have a couple bad cells. Ni-MH cells are 1.2v nominal so 12 in series makes a perfect 14.4v battery. If you want to make a 12v battery out of these cells you can do 10 cells in series for a perfect 12v battery.
Here is a great auction for you to make money on. These batteries in working condition are going for around $110 each on ebay. They are very simple batteries and I know our customers know how to repair them. It is a basic 12 cell 4s3p 14.4v battery. These modules were mostly returns. They are Anton Bauer Gold Mount batteries. Check them out on eBay and Google you will see these sell very well. The module we opened for the photos the cells were all sitting around 2.8v so it is possible a lot of these all have good cells inside. Perhaps a balance charge will get them working again. Some even show that they are working. To open them you want to get a flat head screw driver and pry the 4 tabs, there are also 2 locking tabs on the sizes when you pry open one side just hit the locking tabs with the screw driver and it will pop open. Usually we recommend to just recover the cells inside but these modules are likely worth ordering the charger for the units, properly testing them, then selling them. The cells are 2100mah Sanyo lithium ion 18650 cells. The good model with the grey insulator ring. Even if some have bad cells inside you can rebuild most of these as long as the BMS units are not bad. I think someone who puts time into these will be able to get most working again but that is not guaranteed.
I know a lot of our customers have the knowledge, basic tools, and skills to make money repairing batteries and this would be one of those lots that could be very valuable to the right person and you could make some good money. Just make sure you properly test them before selling them, some might appear to be good but then won't work on the device so to limit any returns your best chance is to find the charger and the device they power and actually test them that way. You could even buy the charger and the device then sell it after using them for your testing. There's a potential to repair the ones with a bad cell or bad circuit board and the ones that work as is just sell after testing them. Could potentially sell these thousands. We did not test these modules and we are auctioning them as we got them in. None have been opened other than the 1 we took for a photo. We will not be competing against you so don't worry. Only 2 pallets of these on auction and a 3rd pallet with some mixed in but that's all we have.
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