Failed after four recharge cycles.
Original 500 series NiMh battery lasted 200 full discharge cycles (cleaning two rooms once per week two years, always left on the charger between; resetting and long recharge did not revive it).This replacement charged and ran properly out of the box but for only four charges.There appears to be no warranty by the company, and after use may not be returnable to Amazon (still within 30 days and appears as refundable by Amazon, so will return it to them and see). (Was refunded -- Amazon is supplying the backup the suppliers don't do themselves, probably more efficient over-all for small items and all the shipping).
After failing does not hold a charge; the full charge light comes on after 15 minutes, and the Roomba is dead when turned on or runs 5 minutes. This is after being on the charger a week, starting with supposedly full charge. Same symptoms as with the original battery.But it worked well a few times, so the system seems intact -- the only variation is the battery.
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HQRP APS Battery for iROBOT Roomba 500 Series Replacement plus HQRP CoasterProduct Description: Products trademarked HQRP® are marketed and sold exclusively by Osprey-Talon. Replacement APS Battery Compatible with iROBOT Roomba 500 [Vacuum Cleaning Robot] .
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Worked as advertised. Straight drop in. Subjectivly, it appears to have longer run time between charges.
