![]() I have sold power tools for a few years and their are actually pretty good margins in them. The prices for batteries are high because they can be. drill + packs + charger) and sell the drill and charger on Craigslist. My suggestion if your looking to get cheap replacement batteries is to buy a new combo kit (e.g. (I've seen some pretty terrible scenes resulting from when batteries 'go wrong'). Generally, replacement batteries, especially power batteries, and especially lithium-ion batteries, are not something you want to mess with due to the hazards. My guess is that if you were to use this battery on a high vibration tool (like a recip saw), it would fail quickly. The tab, insulation, and cell construction is all really critical to the durability of the battery.Do not use cardboard as an insulator! Flammable much?.With the undersized tabs on those cells, they will definitely get this hot in a heavy application. At high rates of discharge, the joint will desolder and break connection, potentially leading to a dangerous arcing condition. High current cells should not be soldered together.The impedance is higher, the capacity is lower, and the cycle life is lower. ![]() Replacement cells are nearly always inferior to the OEM cells.Also, I'm a fervent DIY-er, so good job doing it yourself.Īll that said, if you're anything but a 'light duty' power tool user, I do not recommend your procedure with these following critiques. DeWalt accessory batteries are ridiculously priced compared to what they cost to make. I am a DeWalt battery pack engineer who did line maintenance for NiCd batteries. r/DIY now has a Discord channel! Come chat with us!ĭid you miss the AMA with Patrick DiJusto? Click here to read it!Īll content must be DIY - if you paid for the work or found it posted online it is not DIY. AMA with Travis Larson is over Check it out!.COVID-19 DIY PPE Post is live, connecting medical professionals with DIYers!.Quinn Dunki of Blondihacks answers your questions! Read her insights into machining and cat dentistry here.
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