What is the lifespan of RM2 system?

A three year warranty on the systems is included with free parts and labour. The lifespan of the equipment is 25 years for the solar panel, 10 years for the pump, 5 years for the battery. The lithium battery cells can be serviced after 5 years at a cost of Kshs. 10,000 only. The pump can be replaced at a cost of Kshs. 17,500 after 10 years. The solar can be replaced at a cost of Kshs. 15,000 after a period of 25 years.