I recently took my 9.0 High Demand batteries to a service center after finding that they barely lasted a few minutes with my string trimmer. They only charged up to three lights, and I suspect there are some bad cells inside. After having them tested, the service center told me that they haven't been used enough, being charged only 30 and 34 times respectively. They offered to let me trade them in for 8.0 batteries at $129 each. Given the cost and my experience with my 8.0 batteries running well, is this a good deal or should I shop around for better options? I have a significant investment in Milwaukee tools and mostly use my batteries for home projects, but these higher capacity ones were rarely needed until now.
4 Answers
Just to clarify, I went to an actual Milwaukee repair center. They told me they wouldn’t repair the batteries but would replace them with 8.0s since they no longer make 9.0s.
The best way to store Li-ion cells is to keep them under 50% charge and at about 70°F. Just letting them sit without use doesn't help either. It's normal for them to get out of balance or have issues like you described, but given the options, you could consider getting a dual bay supercharger and two Forge 8.0 batteries for about $340. This would be slightly more, but you'd also get a solid charger. Plus, you might be able to sell your 9.0s for a decent price, even if they don't work as expected.
Keep in mind that there are two types of 8.0 batteries—HO and Forge. If you're getting Forge, it's not terrible, but if it's HO, then that's a bit of a rip-off.
Honestly, at that price, you might want to check out the FORGE batteries for just $10 more. They seem to offer better value based on performance.
Got it! It sounds like the service center was just pushing those sales. Have you thought about asking for a warranty replacement instead?