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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

Handling

DataSafe

®

 XE 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.

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.

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

1. Receiving

1.1. In-Transit Damage or Short Shipments

Upon receipt of the shipment, please check that the items delivered are 
undamaged and match the carrier’s Bill of Lading. Report any damage or 
shortages to the carrier. EnerSys

®

 is not responsible for shipment damage 

or shortages that the receiver does not report to the carrier. 

1.2. Shipment Damage or Shortages

Open the shipping containers and check the contents for damage and 
against the packing slip. Immediately inform EnerSys of any damaged or 
missing items. EnerSys is not responsible for damaged or missing items 
after a shipment has been in storage.

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 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.

The maximum storage times before a refresh charge is required and 
recommended open circuit voltage audit intervals are:

Monoblocs must be given a refresh charge when bloc voltages approach 
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 or strings at a constant voltage equivalent to 2.29 - 
2.40Vpc with 0.1C

10

 current 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

 with no load connected to the battery. 

Either of the following methods can be used:
• 

Charge for 7 continuous days at the recommended float voltage of 
2.29Vpc at 20˚C / 68˚F or

• 

Charge for 24 hours at the recommended boost charge voltage of 
2.40Vpc at 20˚C / 68˚F. 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 to a maximum of 1% by volume of free air.

Keep flames away

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

Re-cycle 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 

60ºC, or incinerate. Avoid any short 

circuit. Metallic parts under voltage on 

the battery, do not place tools or items 

on top of the battery

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