Tenergy 2200mAh Sub C NiCd Battery for Power Tools, 1.2V Flat Top Rechargeable Sub-C Cell Batteries with Tabs, 120 Pack

I have a complete set of nice battery powered tools that require battery packs that are no longer available. I debated spending hundreds of dollars to upgrade to Lithium-Ion tools, but changed my mind after reading that light weight and power output are poor trade-offs for half the charge cycle life, complex electronics (that can fail), and expense. Perhaps it would be different if I was in a trade using my tools all day, every day.The Tenergy Sub C's not only allowed me to rebuild a complete 18 volt battery pack, the 2200mAh rating was almost twice the power capacity of the original 1200mAh cells. The power connectors are long enough to allow 'Fold Over' or 'Quarter Fold' in any direction required. I mated the connectors, then used long-nosed pliers to secure both straps, rolling them together before crimping them flat. I then soldered the mated connectors - the material accepts a great solder bond. As a bonus, after careful testing of the old battery cells, I was able to save ten good units, enough to change out bad cells in two additional old battery packs. I certainly will purchase another set in a year or so and repeat the process.NOTE: Connecting fifteen cells is a meticulous process and all connections should be soldered and protected. In addition, some battery packs have a thermo-sensitive device that must be retained and wired in the original location. Improperly wired or connected cells can cause overheating and possible fire hazard - so be careful and never mix cells of different voltage or capacity. Also worth mentioning, there are some nice NiCad powered tools (NOT Lithium-Ion) that have terrible chargers that can 'cook' your batteries if left connected. I used a simple light timer in the past; however, I now wire the original connector of simple two-wire systems to a compatible charger that automatically shuts off, (e.g. the Black & Decker BDFC240,) drastically extending power pack life and well worth the $30 investment. Auto shut-off chargers will normally provide a LED indicator reporting if the battery pack is defective, charging, or the cycle is successfully completed.

The media could not be loaded. Fit was perfect and a great value compared to battery stores nearby. So far the quality is great. The batteries in the video are the old ones that I needed to replace. The new ones worked amazing and fit just in place. The tabs worked like the originals and I was able to tape down the tabs I didn’t use so they weren’t in the way. So far so good!

I had a HF original tool battery power pack. Couldn't get a replacement no where, so I opened it up and searched for the batteries, and found these batteries. I spot welded them as the old worn out pack and so far these batteries are outstanding. I used 50% of the battery power. I plug in the pack on it charger and I was surprised that the pack was recharge in 11 minutes. So I'm satisfied for this purchase.

I didn't know what I was doing. I learned a lot. Important to realize that these babies are shipped fully charged. My work table has an aluminum strip around the edge. NiCd batteries soldered in series react poorly when slid over the aluminum edge!Tenergy regards the vinyl shrink-wrap cover as an advantage over the typical cardstock used by OE manufacturers. And it's very photogenic! But when a clod like me accidentally arcs the tabs with the edge of a table (or the soldering iron... Jeezuzz! Who knew that big copper tip coated with solder would conduct electricity, really?), the vinyl cover produces a genie out of a puff of smoke, leaving even more exposed surface to arc. I quickly understood the advantage of the tiny TP tubes. When you touch them with a soldering iron, they just get a darker brown spot - same as your skin does. So, I learned real quick to slide the TP tubes off the old cells and onto the new ones.All that learned, a little practice with tinning technique, and I was able to rebuild a couple battery packs for my 14.4V Blue Point 3/8" impact driver. I had to create a couple clearance notches in the plastic case for my first effort, which didn't quite fit back in the housing, but my second one was much better and looks factory. Time will tell how these last, but my driver works nicely and nothing burst into flames when I put them on the charger. Around here, lack of explosion/flames is the litmus test for success.

Just as advertised

Getting hard to find replacement DC9096 that are truly OEM. Plenty of 3rd party brands but I have never had good luck with them - they usually use cheap batteries and are good for a year at most.Tenery is at least a brand I have heard of so I figured I would try to do the rebuild thing. Took an hour or so mostly because I am so rusty at soldering battery cells (have not done it since I was a kid running electric RC cars). Both ends of each battery have tabs but had to cut one side down since the cells are in a spiral pattern and the tabs do not line up. But you dont want to rip them completely off since I found it much easier to soldier to them with the uncut tabs (positive) then bare end cap. I just cut them flush on the negative sides.But once put back together, they charger picked them right up. I have done limited testing with the new pack but they hit just as hard and last just as long as the original pack. I will update if I notice a drastic change but so far so good!

It can be confusing when you are new to making battery packs, especially when both battery ends are flat. I used a blue permanent marker to mark the plastic around the positive ends. Do not remove the black protective plastic covering from tabs until you need to use them. Do yourself a favor and buy a spot welder as it will be safer and easier. I thought I could get away with using a regular soldering iron, but not only did I waste a lot of time and solder, I didn't get it right. I removed all the tabs and used nickel strips that came included with a spot welder. This was my first pack and I plan to buy more from this company. My only complaint is the labeling for positive ends could be better.