Glossary

Battery cycle

- The theorectical discharging of a battery from 100 % to 0 %, and recharging back from 0 % to 100 % in one cycle. Twice discharging to 50 % and fully recharging is also one cycle, as is four times discharging to 75 % and fully recharging again. This is all theory however: In practice a battery is discharged not more than 50 %.

BV (Bureau Veritas) Approval

- Bureau Veritas is a French classification society for shipping, passenger vessels and some large yachts. The requirements in terms of safety and functionality are stringent and approval is required by many insurance companies. Most Mastervolt equipment exceeds BV’s rigorous standards.

Bulk Phase

- The first stage in a modern 3-step+ charging system. The output current of the battery charger is 100 % during this stage, while voltage depends on the power remaining in the battery. The bulk phase is followed by the absorption phase.

Battery Monitor

- Device that monitors and shows battery status

Battery charger

- Used to charge batteries. Its capacity should be at least 15 to 25 % of the battery capacity with a flooded battery and max. 30 % with an AGM battery, up to 50 % with a Gel battery and up to 100 % with a Lithium Ion battery

Battery

- Converts chemical energy into electrical power and vice versa. The nominal voltage of a battery is 2 volt, and higher voltages are achieved by connecting several batteries in series.
For instance, six 2-volt batteries can be combined to provide a nominal voltage of 12 volt.