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Large Capacity Lithium Battery Packs - 700AH and 1000AH cells

The high capacity cells are especially suitable for making battery banks. It is very easy to make a battery bank of 12V, 24V or 48V. The large capacity cells reduce the need for cabling and make the installation very stable.

Link to 700AH cells

Link to 1000AH cells

 
 


See ideas for 12V battery packs:

 

 
 


See ideas for 24V battery packs:

 
 


See ideas for 48V battery packs:

 
 


Advantages of the lithium cells technology

Store easily large amounts of electric energy in the most safe and secure lithium technology.
High energy efficiency: minimal loss of energy during the charge and discharge cycle.
Long time reliable performance over many years. The cells have very high internal stability and well work for many years and decades.
High cycle life: the cell support thousands of cycles 3000, 5000, 7000, or more.
Reduced toxic risks: no acid electrolyte, no dangerous gasses during normal operation, low fire risks
High power applications: extreme power rating for short time discharge current - up to 20C (thousands of Amperes)
High power rating for deep discharge cycles – support discharge currents of 3C continuously.
Minimal self-discharge rate - no memory effect – the energy charged to the cell will stay for many months. The cell can be charged at any state of discharge.

 
 


Basic technical specification

Nominal voltage of the cell is 3.2 V
Operational voltage is 2.5 - 3.8 V
The maximum charging voltage for initial charge is 4 V.
Recommended subsequent charging is to 3.8 V. Cell may be destroyed when continued to be charged above this voltage.
Cell balancing voltage 3.65V. This is the recommended charge voltage for most applications.
Save discharge voltage 2.8V. It is suggested to stop discharge when this voltage level is reached.
The minimum voltage is 2.5V. The cell may be destroyed when voltage drops bellow this voltage.

Check the important information published at the GWL/blog

Cell charging FAQ information
The initial charging of the cells
Questions on charging LFP cells
Charging before shipping to customers
FAQ: balancing of the cells at the initial charge
Long time balancing – a slow way to damage the cells
More information at the Charging section

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