In 2019, a few large fire test series were car­ried out in order to deter­mine fire safe­ty mea­sures of Lithi­um-Ion bat­ter­ies with­in the scope of a research project SUVEREN. Test series with trac­tion bat­ter­ies, wood­en design fire loads and with CNG jet fires, with/ with­out fire­fight­ing of dif­fer­ent agents were con­duct­ed in our test lab. The fire behav­iour of bat­tery ref­er­ence and design fire loads of iso­lat­ed NEC and of the entire vehi­cle with/ with­out fire­fight­ing tech­nolo­gies were inves­ti­gat­ed. Dif­fer­ent mea­sure­ment meth­ods for the deter­mi­na­tion of bat­tery fires were imple­ment­ed dur­ing the fire tests of Lithi­um-Ion bat­tery fire safe­ty (gas analy­ses and dif­fer­ent meth­ods for HRR deter­mi­na­tion).