Inspiron 1545 battery help

Hi

Last week I purchased a Dell Inspiron 1545 Laptop at Carrefour supermarket in Spain. The laptop is brand new however it was an ex display model and came without a battery. I therefore ordered a Dell battery online (not from the Dell site) which was supposed to be original and for the 1545.

On the battery it says:

Dell Battery Module

Type: GW240  

Rating 14.8V

Capacity 28Wh

However when I insert the battery I get the following warning message

“WARNING: The battery is non recommended battery.
The system will be unable to charge this battery”.

It gives me the option of pressing F1 to continue which when I do so and get to windows I get the following message:

“The model number of the primary battery is non-recommended. The battery cannot provide sufficient power to run the system on battery mode. Please insert a Dell 56wh battery or higher for best system operation”

I therefore have been in contact with the supplier of the battery and he confirms that it is an original Dell battery, however is asking me the following question

What are the volts and capacity of the battery that came with the laptop?

As I have not got the original battery I would be grateful if someone with an original battery, could kindly supply me with this information. I can then reply to the seller and hopefully get a refund, so that I can purchase one from the Dell website which is what I should have done in the first place.

Thanks in advance

Rob