Rechargeable Batteries

[martinjr]

Is there a reason why rechargeable batteries have lower voltage than non-chargeable ones? I have a toy for my grandson which uses 4 x 1.5 C batteries. If I use the equivalent in rechargeable the total voltage amounts to 4.8 rather than 6.0

[Old_Geezer]

It's the materials they are made from. It's not a free choice, one puts the materials together and the voltage obtained is the voltage obtained; so they match them to normal cells as close as they can.

[BRIGHT SPARK]

Rechargeable batteries will generally output 1.2v across the complete discharge range however alkaline will start at 1.5v and will drop below 1v when almost discharged.

[EDDIE51]

It is the current that is important more than the voltage, rechargeable's give higher current but a slightly lower voltage.
Mine you I had a old 1960's electric clock that would not run on rechargeable or alkaline battery's but was fine on the old Zinc Carbon ones with the full 1,5 volts.