Was looking for a spare for my D40 when the battery ran out on trips and came across this! Reviews seem great! Doesn't come with cover for terminals, but can use my own.
Buy 2 or more and the price drops to £5.99
May fit other Nikons
"This battery is a high quality 7.4v 1000mAh lithium-ion replacement for the following battery types Nikon EN-EL9
Popular cameras that use this EN-EL9 battery include: Nikon D40 and D40X digital SLR
We recommend that this battery is fully charged prior to first use. By following this simple instruction, you will enjoy superb performance - equivalent to or exceeding that of the manufacturer's original battery. "