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Article No: FAQ040 |
Here are some great resources to learn more about batteries:
Johnson Matthey "Our Guide to Batteries"
General Info on "Pz" batteries:
(O)PzS (Flooded) and (O)PzV (Gel) are both tubular lead-acid batteries. They have a higher lead content and more surface area, providing them a higher energy density and a longer lifespan.
(O)PzS batteries are a form factor designed for traction systems, meant to be put in a pack and bolted together by their terminals. There are 3 main types, PzS, PzB and PzV.
PzS is the Standard DIN style form factor Lead-Acid battery.
PzB is the less common BS (British Standard) form factor Lead-Acid battery.
PzV is either Standard DIN or BS, but in a Gel-Cell chemistry.
PzS means Pz = PanZerplatte (tubular plate) S = Flüssig (flooded) "MOTIVE"
OPzS means O = Ortsfest (STATIONARY) Pz = PanZerplatte (tubular plate) S = Flüssig (flooded)
OPzS are recommended for backup applications (UPS/telecom/stationary) and deep cycle applications, where the battery is actually spending the most-part of its life in float operation. That means the electrolyte concentration will stay high for a very long time, hence there is an increased chance of plate corrosion (that's why most battery manufacturers will choose a lower (1.24) electrolyte density).
"OPzS vs PzS" ...
Basically:
Same efficiency
Same chemistry
Same electrical characteristics
More electrolyte in OPzS (stationary)
PzS (motive) is designed "stronger" to handle the forces of motion
PzS are cheaper (mass production)