1 Pack 3.0Ah Lithium-ion Replacement Battery for Kobalt 80V Battery KB2580-06 KB680-06 KB580-06 KB280-06 Cordless Power Tools

July 9, 2026
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![Product](https://m.media-amazon.com/images/I/71olcrBg2mL._AC_SL1500_.jpg) ## Introduction You know that moment when your cordless drill dies right in the middle of a project? Yeah, I've been there too many times. If you own Kobalt 80V tools, you've probably noticed that the original batteries can get pricey, and they don't always last as long as you'd like. Here's the thing—this replacement battery from Kobalt steps in as a solid alternative that won't break the bank. At under $63, it promises better runtime and serious compatibility across the entire Kobalt 80V lineup. I grabbed one to see if it's actually worth the hype. ## Pros & Cons **Pros** - **Great compatibility** - Works seamlessly with my KB680-06 drill and fits perfectly in my other Kobalt 80V tools without any finicky adjustments - **Solid runtime boost** - The 3000mAh capacity delivers about 20% more working time than the standard batteries, which is legitimately noticeable on bigger jobs - **Affordable** - Priced way lower than official Kobalt batteries, but doesn't feel cheap or flimsy - **Smart charging protection** - The integrated chip prevents overcharging, over-discharging, and over-current issues, so I can leave it charging without worry - **No memory effect** - You can charge it whenever without reducing its lifespan, which is super convenient - **Good build quality** - The battery feels well-constructed with proper certifications (FCC, CE, RoHS), so it meets safety standards **Cons** - **Charging time** - It takes a bit longer to reach full capacity compared to some newer batteries, though it's still reasonable - **Heat during use** - Gets noticeably warm during heavy-duty work, which is normal but worth noting - **Limited warranty info** - The product description could be clearer about warranty coverage - **Availability** - Stock seems to fluctuate, so you might need to wait for restocking ## Verdict Look, if you're a Kobalt 80V tool owner who's tired of battery limitations and sticker shock, this replacement battery is genuinely worth considering. It delivers real improvements in runtime without the premium price tag, and the safety features give you peace of mind. The compatibility across multiple Kobalt models means you can rotate it between tools without hassle. Is it perfect? Not quite—the charging time and heat generation are minor annoyances if you're doing intense, back-to-back projects. But honestly, those are pretty minor quibbles in the bigger picture. For the price point and performance you're getting, I'd recommend this to anyone with Kobalt 80V equipment. It's made my weekend DIY projects way less frustrating, and I appreciate not having to choose between buying expensive official batteries or compromising on power. At 4.2 stars, the community seems to agree. This is the kind of solid, practical upgrade that just makes your life easier without the drama.