Exide Powersafe PPST & UPST 2V VRLA Batteries
Sealed Maintenance-Free Stationary Batteries for Critical DC Power Applications
Exide Powersafe PPST UPST VRLA Battery
range comprises 2V valve-regulated lead-acid
batteries developed for stationary applications.
PPST and UPST combine low self-discharge,
lead-calcium-tin grid technology, flame-arrestor
safety valves and thermal-management features for
critical standby and DC power systems.
20 YearsDesign life at 27°C under ideal float conditions
<0.5%Weekly self-discharge at stated conditions
4000 CyclesAt 20% depth of discharge
Exide Powersafe PPST UPST VRLA Battery Overview
Stationary VRLA Power for Critical Infrastructure
Exide Powersafe PPST UPST VRLA Battery
range is engineered around sealed
valve-regulated lead-acid technology for
stationary DC and standby-power applications.
The battery architecture uses a proprietary
lead-calcium-tin alloy in the positive grid,
contributing to low float-current
characteristics and low water loss.
Reduced float current also limits heat
generation, while dedicated thermal-management
features support operation under demanding
ambient conditions.
PPST is designed around a robust grid and
multiple-terminal architecture for stationary
applications requiring high-current capability.
Ribbed PPST containers support structural and
thermal management, while multiple terminals
help reduce voltage drop in higher-capacity
configurations.
UPST incorporates enhanced plate length for high
power density together with deep-discharge
recovery and low self-discharge characteristics.
Both ranges use self-resealing flame-arrestor
safety valves and sealed maintenance-free VRLA
construction.
The architecture is intended for stationary
installations exposed to repetitive
charge-discharge operation and occasional deep
discharge.
PPST and UPST combine sealed VRLA construction with
grid, plate, terminal and safety-valve technologies
for stationary power applications.
VR
Sealed Maintenance-Free VRLA
Valve-regulated construction provides a
sealed stationary battery architecture
without routine electrolyte-water topping.
Ca
Lead-Calcium-Tin Grid Alloy
Calcium-tin grid technology supports low
float-current characteristics, reduced
water loss and controlled corrosion.
SD
Low Self-Discharge
Self-discharge is less than 0.5% per week
at the stated C10 and temperature reference
conditions.
TRM
Thermal Management
Grid chemistry and container-design features
work together to manage heat during
stationary battery operation.
TER
High-Current Terminal Architecture
PPST higher-capacity configurations use
multiple terminals to reduce voltage drop
and improve current-carrying capability.
SAF
Flame-Arrestor Safety Valve
A self-resealing flame-arrestor fitted safety
valve forms part of the VRLA pressure and
safety architecture.
GRID
Ca-Sn Alloy
→
VRLA CELL
2V
→
DC LOAD
Stationary
LOW FLOAT CURRENT
THERMAL CONTROL
SAFETY VALVE
CHARGER ⇄ VRLA BATTERY BANK ⇄ CRITICAL DC LOAD
Stationary VRLA Battery Architecture
Lead-calcium-tin grids, sealed cells,
pressure-control valves and terminal
architecture work together within a
stationary battery bank.
Conceptual illustration — Exide Powersafe PPST UPST VRLA Battery grid, cell, valve and stationary DC power architecture
Exide Powersafe PPST UPST VRLA Battery Technology
Low-Float-Current Grid Technology for Stationary Power
Exide Powersafe PPST UPST VRLA Battery
technology combines sealed VRLA cells,
lead-calcium-tin grids, low self-discharge and
thermal-management features for critical
stationary battery systems.
PPST and UPST share a 2V sealed VRLA platform while
differing in grid, container, plate and terminal
implementation across individual configurations.
Manufacturer
Exide Industries Limited
Product family
Powersafe VRLA
Ranges
PPST and UPST
Battery category
Stationary Valve-Regulated Lead-Acid Battery
Nominal cell voltage
2V
Construction
Sealed maintenance-free VRLA
Positive grid alloy
Lead-calcium-tin alloy
PPST corrosion alloy
Special calcium-tin corrosion alloy
Self-discharge
Less than 0.5% per week at C10 capacity at 27°C
Storage characteristic
3 to 6 months depending on ambient temperature,
with freshening charge requirements dependent on
storage conditions
Design-life reference
20 years at 27°C under ideal float conditions
Cycle reference – 20% DOD
4000 cycles
Cycle reference – 50% DOD
1800 cycles
Cycle reference – 70% DOD
1400 cycles
Deep-discharge characteristic
Excellent recovery from deep discharge
PPST container
Ribbed container for structural and thermal management
PPST terminal architecture
Multiple-terminal design; 4/6-terminal
configurations in higher-capacity range
UPST plate architecture
Enhanced plate length for high power density
Safety valve
Self-resealing flame-arrestor fitted safety valve
Material characteristic
Cadmium-free
GTP capacity bands
80–400Ah, 415–1000Ah and above 1000Ah
Values vary by model and configuration; applicable Exide
product documentation governs the configuration.
Exide Powersafe PPST UPST VRLA Battery FAQs
Frequently Asked Questions About Exide Powersafe PPST & UPST
Key information about PPST and UPST construction,
stationary applications, self-discharge and
configuration-dependent technical parameters.
?
What is an Exide Powersafe PPST UPST VRLA Battery?
Exide Powersafe PPST UPST VRLA Battery
refers to Exide’s 2V sealed
valve-regulated stationary battery ranges
developed for compatible standby and
critical DC power applications.
?
What is the difference between PPST and UPST?
PPST emphasises a robust grid, ribbed
container and multiple-terminal design for
high-current stationary applications. UPST
includes enhanced plate length for high power
density along with low self-discharge and
deep-discharge recovery characteristics.
?
What is the self-discharge rate of PPST and UPST batteries?
The range is specified at less than 0.5%
self-discharge per week at C10 capacity at
27°C, with storage duration dependent on
ambient conditions and freshening-charge
requirements.
?
What technical parameters vary by model/configuration?
Capacity, dimensions, weight, number of
terminals, charging parameters, discharge
performance and battery-bank arrangement vary
by PPST or UPST configuration. Values vary by
model and configuration; applicable Exide
product documentation governs the
configuration.
VRLA Cells, Grid Technology & High-Current Stationary Power
Explore conceptual views of the VRLA cell,
stationary battery-bank power path and PPST
high-current terminal architecture.
EXIDE POWERSAFE
2V VRLA CELL
FLAME-ARRESTOR SAFETY VALVE
Ca-Sn GRID
SEALED
LOW FLOAT
2V Powersafe VRLA Cell Architecture
Sealed stationary cell with low-float-current grid and pressure-control valve
Conceptual illustration — Exide Powersafe PPST UPST VRLA Battery sealed-cell, grid and safety-valve architecture
CHARGER
→
VRLA BANK
→
DC LOAD
FLOAT ⇄ BACKUP POWER
Stationary Battery Power Path
The VRLA battery bank remains connected to the charging and critical DC power architecture
Conceptual illustration — Exide Powersafe PPST UPST VRLA Battery charger, battery-bank and stationary-load architecture
TERM
TERM
TERM
TERM
RIBBED PPST CONTAINER
HIGH-CURRENT ARCHITECTURE
PPST Terminal & Container Design
Multiple terminals and ribbed construction support high-current and thermal requirements
Conceptual illustration — Exide PPST VRLA Battery multiple-terminal and ribbed-container architecture
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Battery pricing, availability and product
information.
