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The maximum storage times before a refresh charge is required and 

recommended open circuit voltage audit intervals are:

Monoblocs and cells must be given a refresh charge when the OCV 

approaches the equivalent of 2.10 Volts per cell or when the maximum 

storage time is reached, whichever occurs first.

2.2. Refresh Charge

Charge the monoblocs / cells or strings at a constant voltage equivalent to 2.29 - 

2.40Vpc with a minimum 0.1C

10

 Amps available for a period of 24 hours.

2.3. Commissioning Charge

Before commencing operation, the battery must be given a commissioning 

charge. The batteries should be charged using constant voltage with a 

minimum charge current of 0.1C

10

 Amps with no load connected to the 

battery. Either of the following methods can be used:
• 

Charge for 96 hours at the recommended float voltage of 2.29Vpc at 

20°C or

• 

Charge for 24 hours at the recommended boost charge voltage 

of 2.40Vpc at 20°C. The battery will then be switched over to float 

charging, maintaining the battery under floating voltage for 24 hours 

before any discharge test.

3. Battery Location

The battery compartment/room must have adequate ventilation to limit 

hydrogen accumulation. Batteries must be installed in accordance with the 

EN 50272-2 standard and any other local/national laws and regulations.

2

Handling

SuperSafe

®

 T Front Terminal and 2 volt DIN-size 

batteries are supplied in a charged condition and are 

capable of extremely high short circuit currents. Take 

care to avoid short-circuiting terminals of opposite 

polarity.

 

Important

Please read this manual immediately on receipt of the battery before unpacking and installing. Failure to comply with these instructions will render any 

warranties null and void.

Care for your safety

2

Keep flames away

In case of accidental overcharge a flammable gas 

can leak off the safety vent.

Discharge any possible static electricity from clothes 

by touching an earth connected part.

Tools

Use tools with insulated handles.

Do not place or drop metal objects on the battery.

Remove rings, wristwatch and articles of clothing 

with metal parts that may come into contact with 

the battery terminals.

No smoking, no naked flames, no sparks

Shield eyes

Read instructions

Electrical hazard

Danger

Recycle scrap batteries. 

Contains lead

Electrolyte is corrosive

Clean all acid splash in eyes or on 

skin with plenty of clean water. 

Then seek medical help. 

Acid on clothing is to be washed 

with water

Warning: Risk of fire, explosion, or 

burns. Do not disassemble, heat above 

60°C, or incinerate. Avoid any short 

circuit. Metallic parts under voltage on 

the battery, do not place tools or items 

on top of the battery

Temperature (°C / °F)

Storage Time  (Months)

OCV Audit Intervals (Months)

+10 / +50

48

12

+15 / +59

34

12

+20 / +68

24

12

+25 / +77

17

6

+30 / +86

12

6

+35 / +95

8.5

3

+40 / +104

6

3

1. Receiving

Upon the receipt of the shipment, check the contents for damage and 

against the packing slip. Immediately inform EnerSys of any damaged 

or missing items. EnerSys

®

 is not responsible for shipment damage or 

shortages that the receiver does not report to the carrier.

2. Storage

2.1. Storage Conditions and Time

If a battery cannot be immediately installed it should be stored in a clean, 

cool and dry area. During storage monoblocs / cells lose capacity through 

self-discharge. High temperatures increase the rate of self-discharge and 

reduce the storage life.
The chart below shows the relationship between open-circuit voltage (OCV) 

and storage time at various temperatures.

California Proposition 65 Warning

 - Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to 

cause cancer and reproductive harm. Wash hands after handling.

ENGLISH

SuperSafe

®

 T

FRONT TERMINAL AND 2V DIN-SIZE SERIES

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