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I am looking for a model I can use in LTspice for a a Lithium Ion battery. It is a pulsed load and I want to see things like heat losses and discharge time. Is there an existing model I can utilize for this, how can a li-ion battery be simulated in lt spice?

I am using a Saft 7s2p battery.

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    \$\begingroup\$ Try the LTspice group's Files area. If you search for Li-Ion you'll get some results. \$\endgroup\$ Nov 9, 2020 at 18:47
  • \$\begingroup\$ @aconcernedcitizen Thanks this was a nice resource I didn't know about. \$\endgroup\$
    – MaxwellEE
    Nov 9, 2020 at 19:20

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You can use a scheme like this:

It uses a seperate circuit to simulate the battery. The problem will be deriving the values for the battery that you have, the values for the series resistance , and the RC values for the battery will need to be formulated by you. The way to go about doing this is described in this paper: An Accurate Electrical Battery Model Capable of Predicting Runtime and I–V Performance enter image description here.
Source: https://www.edaboard.com/showthread.php?214394-how-to-make-a-battery-model-of-NiMH-on-HSPICE

Note the dependent sources would be b-sources in LT-spice with nodes for the inputs.

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