Attempting to Revive a DeWalt Battery Didn't Work for Me...Yet by
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- Опубліковано 2 жов 2024
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I will buy a new Dewalt rechargeable tool when they begin supplying replacement (18V) batteries for the Dewalt tools I already own.
Have you thought about using the adapter? This would allow you to use new batteries with your old tools and slowly transition over to the new tools.
@@GettinJunkDone Frankly, was only vaguely aware of the adaptor. FYI you need not only the adaptor, but also a 20v battery (which I believe has a lower Amp hour rating than my present high capacity 18v pack, so shorter run time), and a 20v charger. Home Depot and others are offering these parts at a cost of $199. See my other comment here about a third party company that is offering what Dewalt can't or won't provide: a simple $40 18v high capacity replacement battery pack that appears on preliminary testing to be 100% compatible with the Dewalt 18v tools and chargers I already own. Sorry, but I WILL NOT reward Dewalt with additional business while they seek to make me replace my perfectly good tools and chargers through planned obsolescence. Another example: modern kitchen major appliances now cost nearly $1000 or more. They are full of electronic gimmicks related to the controls, that are not necessary and which, if they fail are not supported by the manufacturer after about five years (sometimes much less). They DO fail because they contain delicate electronic components which are much more sensitive to voltage transients and even static discharges than the much more robust electromechanical controls that typically lasted several decades in our parents' appliances. So you get to throw the whole appliance away and spend another $1000 for a newer version that the manufacturer has learned how to make even more cheaply and less reliable...
@@kimlground206 18v and 20v batts are the same - its a marketing thing.. ones advetised at notional base rated charge, the other measured at notional max rated charge. they could advertise it at min rated base charge of 19v or a max rated charge of 21v and it would be the same batt.. if they are iddferent AH then they are different cells, but haviung pulled apart both 18's and 20v batts some have identical cells. The problem with single series (no parallel secondary row), is the BMS. some manufs use a non equalizing BMS in their single row batt packs - and thats why they usually have a lot lower shelf life. One cell degradesw, can't be equalised and it eventually hits the lower rating which the BMS regards as dead, at that point you are usually losing another cell as trhe neighbouring cell also then degrades.
@@gfenwick1 Not saying you are wrong, because I have never opened either an 18 or 20v pack, BUT I can tell you that my 18v high capacity packs weigh about twice as much as a 20v and are at least twice as tall as a standard 20v. So, in those respects at least they are not "the same". I believe the 18v packs are NiMH cells (no BMS required for NiMH) while the 20v packs are Lithium which would require a BMS. That could explain the higher cost and greater difficulty finding third parties that will overhaul the 18v packs, as NiMH cells are no longer a commodity item and have become difficult and costly to source . Lithium cells are only marginally better than NiMH (and not as good in some applications), but they are 'the latest thing' and so right now production of them is higher which brings down the cost and improves availability, which is probably why Dewalt changed.
@@kimlground206 Interesting. I would be very curious to see what cells are in yr 18v and 20v batts. Ive been rebuilding these dewalts (and sidchrome as they are rebadged) for the last 5 years. I have never seen a slide on dewalt/sidchrome with nimh cells, seen plenty of dewalt post batts using nimh, but I bought post adapters so that I could use my slide ons with the older tools. Ive never pulled apart the 18/56v or 20/56v batts as all mine are still fine. I suspect though that they are using either 21700 cells or have a BMS that converts the 14 or 15 individual cells into an S1P1 format - the fact that they don't suffer the same probs as the single row S1P1 dewalt/sidchromes using 5 x 18650's daisy chained would indicate that they used an equalising BMS, otherwise they would suffer the same fate. Ive got a tub of low AH single row dewalt/sidchromes which I gutted and used to build S1P2 packs which do have an equalising BMS as standard.
It might be a US/Canada thing as Australia/Europe/AsiaPac dewalts were definitely the same ie 18v using 18650 and 20v 18650 cells were all using identical samsung or LG cells. The BMS on them is rudimentary at best. They are all destined to fail far quicker than if you have a 3-4-5+ AH dual row pack. Some ppl might get lucky and see them last, but its an inherent design fault due to dewalt bean counters wanting to save money. Its why a lot of cordless tool manufacturers used to "give away" low AH batt packs in tool offers. Ryobi are a good example of this.
I would be curious to see what what yr cells are if you ever tear down yr dead packs. In 5 years Ive never seek a NiMH populated slide on pack and I've got a tub full of dead single row shells.