Accumulator nitrate testers

Accumulator

— powered by an original accumulator that is not related to standard sizes, and sometimes non-removable at all.

One of the advantages of such a power supply over batteries is that the accumulator is initially included in the delivery set, and when the charge is exhausted, it is enough to charge it again. Thus, the user does not need to spend extra money on a power source. In addition, original accumulators can be made more compact and at the same time more capacious than batteries. On the other hand, if such a battery runs out, it cannot be quickly replaced: it needs charging, and this takes time and external power.