A quick one here, feedback welcome
NT
Are rechargeables worth it?
Good AA rechargeables ones now give similar capacity to [[alkaline]], aroun= d 2.8Ah. At =A31.50 a cell lasting 500 charges that's 0.3p per charge. Alka= line AAs at 17p each are thus 56x the cost.
Zinc carbons are much cheaper per battery, but give even less capacity per = cost.
The cost of the recharging [[electricity]] is trivial. A 2.5Ah 1.2v cell ho= lds 3 watthours, or 0.003 kWh. Allowing for inefficiencies, 0.005kWh costs =
0.005x13p =3D 0.065p. You can recharge 15 for a penny.- Alkaline cost: 17p each
- Rechargeable cost plus electricity: 0.365p
Where capacity isn't so important, [[cheap]] rechargeables at half the pric= e typically give around 1/3 the capacity.
=3D=3DSee also=3D=3D [[Alkaline battery]] [[NiMH battery]]
[[Category:Batteries]]