固定型鉛酸蓄電池作為備用電源一般主要工作方式是浮充，浮充工作方式，當(dāng)市電工作正常時(shí)，電池組與整流器并聯(lián)運(yùn)行，電池自放電損耗在全浮充過(guò)程得以補(bǔ)足。若市電出現(xiàn)故障則由電池組單獨(dú)向工作負(fù)載供電。該種運(yùn)行方式，電池充／放電次數(shù)少，自放電或淺放電后，能夠得到及時(shí)的補(bǔ)充。所以正、負(fù)極活性物質(zhì)利用率比較高，使用壽命也比較長(zhǎng)。
Stationary lead-acid battery as a backup power general main way to float, float charge mode, when the city electricity works normally, battery and a rectifier in parallel operation, battery self-discharge loss in total float process to make up. If the electricity fails by battery separately to the work load power supply. The operation mode, the battery charge / discharge cycles, since the discharge or shallow discharge, can be timely supplement. So now, cathode active material utilization rate is relatively high, long service life.

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