The valve regulated, spill-proof construction of this battery allows trouble-free, safe operation in any position. There is no need to add electrolyte, as gases generated during charging are recombined in a unique "oxygen cycle".
Long Service Life
A dependable service life can be expected under normal operating conditions.
Long Shelf Life
Low self-discharge rate allows for storage of fully charged batteries for longer periods of time before charging is required. Lower storage temperatures will further extend shelf life.
Wide Operating Temperature Range
May be discharged over a temperature range of -40 ºC to +60 ºC (-40 ºF to +140 ºF), and charged at temperatures ranging from -20 ºC to +50 ºC (4 ºF to +122 ºF).
The high-impact resistant battery case is made either of non-conductive ABS plastic or styrene. Large capacity batteries frequently have polypropylene cases, all of these materials impart great resistance to shock, vibration, chemicals and heat.
Medical Research Lab: 520, 521, 524, 755, 560332, 520 AMPAC Monitor, 520 Porta Care Monitor, 521 AMPAC Monitor, 521 Porta Care Monitor, 521 PortaCare, 521A Porta Care Monitor, 524 AMPAC Monitor, 524 Porta Care Monitor, 600 AMPAC Monitor, 755 Porta Care Monitor, AMPAC Monitor, Porta 520, Porta Care 520 Monitors, Porta Care 521, Porta Care 521 Monitors, Porta Care 524, Porta Care 524 Monitor, Porta Care Monitor, PortaCare 521