Recharge in 2 hours
The new cell characteristics of the B2 battery have two advantages: firstly, the voltage in the cells does not 'dip' significantly at sudden peaks in the current. Secondly, in the long run, the B2 battery does not build up its internal resistance to any significant extent over many recharge cycles.
The B2 is an optional replacement for the standard B1 battery. It can be used in all existing equipment: respirators, battery management systems and chargers.
Every time great demand is placed on your respirator (for instance if you suddenly start to work very hard), the voltage of any battery will ‘dip’ temporarily. As the current peaks suddenly, the voltage in a low-resistance battery dips only slightly and recovers quickly, while the voltage in a battery with high resistance will dip significantly — even below critical power, which may cause the respirator to shut down.
Compare two different batteries over a long period of use. With time, battery B1 develops high internal resistance and begins to lose capacity. It will soon be unsuitable for use in the respirator. Battery B2 is in top condition and is also much less prone to develop rising resistance. It loses comparatively little capacity over time, and its internal resistance remains low for much longer.
It is impossible to give advice as to the life span of a battery or when a battery will lose its usefulness. There are simply too many variables to give such advice, such as mode of use, storage, work load, number of recharges, frequency of recharges, normal chemical changes within the battery cells, and many more. The warranty on a battery covers manufacturing faults of components and workmanship; it does not cover the actual performance or output of the battery over time.