Our 2007 has been getting used a lot less since we got the new Prius Prime (Nov. '21). Only being driven 2-3 times per month. Not sure if that contributed, but at about 180K miles it finally popped the red triangle a few minutes into a drive. My wife was able to drive it back home and I've since been able to do some diags. P0A80 and P3018 codes, looks like blocks 7 and 8 gone bad. I'm not against a bit of DIY work, but don't want to go down the cell replacement/rebalance path. Haven't yet gotten a quote from my local dealership for a new pack. But I've been looking at the various options: New: Nexcell Lithium $2,335.41 (incl shipping), 2-year unlimited mile warranty DIY install, deal with core yourself Toyota $TBD (availability?) newpriusbatteries.com $1,888 2-year or 25,000 mile warranty free shipping, DIY install, deal with core yourself seems like an even more involved DIY, true? Refurbs: Green Bean $1,694.00 + $175 Lifetime Warranty = $1869 they install, take away your core hybrid2go $1,499.00 incl Lifetime Warranty they install, take away your core GreenTec Auto $1250, 12 month warranty free shipping, DIY install, take core back to them (Portland) also a mobile install option but don't have a price quote I know the rest of the car is in fantastic shape and can go MUCH longer, so I love the idea of the NetPower Lithium. But am also tempted by the simplicity and warranty of hybrid2go, not to mention the lower price. If I go with NetPower Lithium, what do people do with their old packs?