VRLA battery uses lead calcium alloy for grid and lead tin alloy for strap, the COS process more likes soldering, COS of lead-tin strap is difficult and needs flux and tinning.

• VRLA电池使用铅钙合金板栅和铅锡合金汇流排,其制造过程更像是钎焊。铅锡合金汇流排铸焊过程须使用助焊剂和搪锡。