BAE SECURA PVV solar batteries are maintenance-free and are used for storing electrical energy in medium and large photovoltaic systems.

Due to the robust tubular plate design, BAE PVV batteries are characterised by long service life and high cycle stability.

Technical Data

Terminals

Terminals with internal thread M10 and brass insert for flexible copper cable connectors with cross-sections of 25, 35, 50, 70, 95 or 120 mm², as well as copper busbar connectors with cross-sections of 90, 150 or 300 mm²

Construction

Positive electrode
Tubular plate with woven polyester gauntlet and solid grids made of corrosion-resistant PbCaSn alloy

Negative electrode
Grid plate in PbCaSn alloy with long-life expander

Separation
Microporous separator

Electrolyte
Sulphuric acid with a density of 1.24 kg/l (20 °C), immobilised as GEL using fumed silica

Container and lid
Impact-resistant, grey-coloured ABS
UL 94 classification: HB
Available on request also with UL 94 classification: V-0

Valve
Valve with flame arrestor, opening pressure approx. 120 mbar

Terminal bushing
100% gas- and electrolyte-tight, sliding, plastic-overmolded tank pole

Protection class
IP25 according to DIN 60529, protection against accidental contact in accordance with VBG 4

Installation

BAE SECURA PVV solar batteries are designed for indoor applications.
For outdoor use, consultation with BAE is recommended.

Maintenance

• Every 6 months: Check battery and cell voltages
• Every 12 months: Check connections and record battery and cell voltages as well as temperature

Operating Characteristics

Depth of discharge (DOD)
Max. 80%

• Uₑ = 1.91 V/cell for discharge times > 10 h
• Uₑ = 1.74 V/cell for 1 h
  Deep discharges beyond 80% DOD should be avoided

Charging current
Unlimited; the minimum charging current should be I10

Charging voltage (cyclic operation)
2.30 V to 2.40 V per cell (observe operating instructions)

Float charge voltage (standby operation)
2.25 V per cell

Temperature compensation of charging voltage
No adjustment required if the monthly average battery temperature is between 10 °C and 45 °C
Otherwise: ΔU/ΔT = −0.003 V/cell per K

Full charge
100% within a period of 1 to 4 weeks

IEC 61427 cycle life

>3000 cycles (A+B)

Battery temperature
-20 °C to +45 °C
Recommended range: 10 °C to 30 °C

Self-discharge
Approx. 2% per month at 20 °C

Delivery

Batteries are not subject to ADR regulations (road transport), provided the conditions of Special Provision 598 (Chapter 3.3) are fulfilled.

Standards

Test standards
IEC 60896-21
IEC 61427

Safety standard / ventilation
EN 50272-2