Hitachi 18v Li-Ion power tool battery (Complete Rebuild)

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Hitachi 18v Li-Ion HXP Battery

Complete Rebuild

Item Number:  330640382241

Price $60.00

This item has been sold

Power tool battery output capacities. Myth or Fact ?

It is not unusual to question the facts in advertising. Yet in my younger years I believed most of what was published as fact. As I got older I now know that most things advertised is fiction.

I have always given the benefit of doubt to all publications but reserved the final decision until the facts presented themselves.

In the power tool battery rebuilding business I was forced to realize that the published output on any battery was questionable.

I advertised that I was building with 2200mah cells and yet after installing cells that were rated at that capacity I could not come close to that number. I was frustrated and confused what I was doing wrong and abused my test equipment as not accurate. After deep study in the industry I found that the test results at the manufacturer were tightly controlled under perfect conditions and the results were not linear with advertised numbers. Even if the numbers were consistent the amount of time the batch tested sits on a shelf before sold wildly influenced the final test.

After many months of  testing of comparable cells from many manufacturers it was apparent that just from one batch to another the testing was off the scale.

Soon after, I concluded that I could not depend on listed capacities and went to individual testing of all cells before installation.

As the result of this information I quit publishing output capacities and referred to output series only.

I have been talking about the output capacity of power tool battery cells, for the most part, but do not  forget that the billions of batteries sold every year are built for flashlights,  toys, camera's,  Etc. and the listed capacity on those are as erratic as the ones I use.

Don't get me wrong, there are really good batteries on the market that do just fine, but please, don't read the hype on the package and believe what it said. You will have to do what I do and check out the differing brands until you find the one that works for you.

Makita battery conversion Details

YOU ASKED,

Will this charger charge batteries that the chip timed out in? Also, what has been your experience with this charger in new Makita 1830li batteries. I'm a remodeling contractor and and have had 3 1830's go out last week and need a charger that can overcome this "chip" problem.
MY ANSWER,

Hi,

I have to say that irony has a way of bringing up a smile. What is the chance of Chip having a problem with a chip.

Anyway, no pun intended.

The universal charger that is in my offer would perform the function of analyses but when the fault in the battery comes up it will check out just like the Makita charger. The difference is the Makita charger reads the battery for information and will not respond when the chip in the battery opens.

I would suggest that all of your batteries have an internal problem (usually a bad cell) that has caused the battery to fail. Now if the chip has been tripped three times it can't be reset and your Makita charger will never recognize it again even after the fault has been neutralized.

If you have not tried to charge the batteries after the first fault the batteries could be rebuilt and then again recharged on your Makita charger. If the chip has been tripped then you have to use a universal charger after the battery is repaired or rebuilt.

Historically, what I have found is the one cell that powers the circuit board is the first cell to die and may be the only bad cell in the pack. This is not always the case but I would put my money on the thought.

If you could ship me the batteries I could run the tests to determine the problem with the batteries and if the chip has tripped or not. In either case the batteries can be rebuilt. The only question then is how you are going to charge them. The options are all better than tossing the batteries and replacing them with new.

Just a suggestion. Let me know.

Power tool battery Info

You Asked:

I really like what you do.

Why do you have different prices for the same type 18v Milwaukee NiCad? Are the higher price batteries better than the lower price batteries?

Can you repair Milwaukee Li-Lon V-18 batteries? We have 6 of them.

If so, what is the warranty?

My Answer;

Firstly, Thank you for the vote of confidence in the Eco Friendly program.

Secondly, The price difference in similar battery packs is based on the way I package them. There are Green rebuilds with salvaged used cells, Green rebuilds with recycled new cells.

I believe the quality is good in either rebuild but the output of the battery will vary on the available output of the cells I get.

There are many projects around the world where batteries were built for specific applications other than tool batteries and they have been placed on the market for cell salvage.

To salvage new cells from terminated projects is the prime way to make my Green project similar to a complete rebuild. The only difference is not being able to dictate the output of the cells I use. Batteries that have a output of 1.5ah are the most preferred for maximum advantage of the specific chemistry. When we use cells of 2.4ah output the peak output at full charge is significant. The down side to this build is the discharge is rapid and does not let the cell go through its regeneration process before discharged.

The output spec on available cells are as wild as MPG on vehicles. It looks good on paper but you better not drive into the desert utilizing the printed promises.

Thirdly, I can rebuild the Milwaukee V18 Lipo pack. The V18 departs from the normal offering of cell application from the 18650 Li Ion series most common in the industry to the larger Lipo A123 cell in your batteries. The new cells are readily available and if the circuit board is intact the rebuild is straight forward and rewarding.

I hope that is not to much information but I have a habit or rambling.

Wanrranty for rebuilds is 180 days.

Please let me know if I can help you.

Thank you,

Eco Friendly Battery Rebuilds for Power Tools

I worked a whole winter on development of the Eco Friendly Rebuild so I could offer a low cost alternative for complete rebuilds or new replacement.

The most difficult function was developing an accurate way to determine the difference of a shorted cell and a cell that was reusable. Once I worked out the procedures of testing I offered the rebuild and noted in the offer that most battery packs deemed unusable had only a couple of bad cells in the mix.

For the first year the success rate on rebuilds were excellent with less than one percent of the packs being returned for repair. That percentage still exists today but the amount of dead cells in a pack has gone from a couple to the whole pack. I still am producing Green rebuilds and feel confident in the markets success to keep pushing forward however the large supply of surplus used cells is nearly depleted.

Most people that use their head for more than holding up their hat have figured out the value of my (Green)offer and have taken advantage of the program and have used this offer rather than a complete rebuild.

What this has done is diminish the amount of usable cells that were gleaned from complete rebuilds  that is required to keep my program going.

I will have to designate the amount of  bad cells that can be in a battery pack to qualify for a Green rebuild  and require complete rebuilds on those packs that exceed that number. This should bring more usable used cells back into the program.

This has been an interesting development.