Hi Jean Carlo, tell me what happened to the cells I am doing one for my Niva 1600 car and I have doubts about how many sheets I must assemble and how is the assembly I have seen different forms but the doubt persists, I help me I have some dope on the oxygen sensors if you still need it, my sheets are 10x15 cm in 2 m/m, the box where I think the one I think about the set of 13x19 x 22 cm. 70 AMP alternator, and 90 AMP battery. The bubbling was done from a radiator water reserve container that has a double bottom and guarantees level to this I put a chek at the gas outlet. Write to With your address and if you still need the doc I send it thanks