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What type of batteries does the HP49G use?

April 26, 2017batteries hp49g type

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What type of batteries does the HP49G use?

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The calculator operates on three AAA batteries, just like the HP48. A capacitor is used to retain the memory while the batteries are replaced so a lithium backup battery is not needed. Rechargeable batteries are not recommended, although NiMH rechargeables do seem to work as long as they are charged weekly. It is, however, highly recommended that you use disposable alkalines while upgrading the system Flash ROM.