I'm very interested in the message 'Henan New Taihang Power Source Co., Ltd' on the China Supplier

Dear Ms Dong,

I would like to order the minimum of one of the NiFe with a capacity of 10 Ah but I don`t see the difference between them. What are the differences between the three NiFe batteries for solar applications? How much would it cost if I order 50 pieces? Is there a difference of the price between them?
Would it be possible to get less than 50 pieces?

Please allow me to introduce myself and give you more information on this request:
I`m a master student at the Institute of Energy and Drive Technologies (IEA) of the university of applied sciences in Ulm, Germany. In the IDA we are doing a lot of research, from electric mobility to renewable energy. In cooperation with the GIZ students developed an electrification kit for schools in development countries, for example Liberia. On occasion of that I would like to take measurements on different Ni-Fe batteries and analyse the potential of their usage in off- grid PV systems.  
The Ni-Fe battery sounds like a very promising candidate for such systems and after this technology was almost called dead in the last thirty years there are only a few suppliers left. 
I`m very interested to get some samples of your Ni-Fe batteries and perform some tests on them. 

Thank you in advance for your efforts. I'm looking forward to collaborating with you in the future. Please do not hesitate to contact me if you have any further questions. We can also talk via skype.

Sincerely
Philine Schellhorn