Heres the problem;
6 month old 85ah battery ,fully charged but after 5 hours use green light on varistream (5 yrs old ) flickers quickly and pump cycles (cuts in and out )as though flow resticted ,this creates an irrating slow flow at brush . Last thur took battery back and was exchanged for new 110ah which was left on charge thur -mon .
Come mon same problem,this time lasted for 6 hrs, charge again for tues went for 1 1/2 hrs and today lasted for 3 hrs then the pump starts cutting in and out again.
Turn the pump to a lower setting on varistream will give a constant flow but little water as turned down low,,cant be battery also had charger checked out,,could it be the varisteam

? any advice would be great