Just installed 100amp ht li time lithium battery, wondering about voltage?

How long would you guess that LRA amperage stayed high or tapered off until the normal run amperage kicked in?

On those high voltage motors you mentioned would you have to adjust cable size for the excessive LRA?
Length of time for LRA is dependent on the total mass of the load being turned and or if something is being started under a load or not. On some of the bigger motors I've seen the current take anywhere from a second or so, on up to to 4 or so seconds until the motor reaches the FLA. During that time period from LRA down to FLA, the current is decreasing the entire time....but it will definitely catch your attention when you see the ammeter jump up to say 700 amps at 4160V, and the normal current reading my be 110, 115 amps.

As far as adjusting the cable size for the LRA....I don't know. I was never involved in any of the engineering or design end of it. The motor protection OL (overloads) must be fine tuned though to be able to withstand that type of current and take into acct. the time delay before it reacts and opens the circuit, taking the motor off line if either current or time is exceeded. Those are fairly expensive devices, just like you would expect in an industrial setting.
 
LiTime has changed their tune, at least a bit. This is a post on a different forum a couple of days ago:

"After a couple of email exchanges with LiTime they have now changed their public statement related to using their for jacks and slides, etc. I'm re-posting the first email and adding the second email says the opposite of the first.
Hello Fred,
Thanks for reaching out LiTime. This is Patty and I'll be here with your assistance.


We don’t recommend using our battery in a jack or slide because the starting ampere may exceed the BMS that can withstand.
Could you please provide the product link or specifications so we can check the compatibility?

Looking forward to your reply.
Best regards
Patty
--------------------------
Second email:
Hello Fred,
Thanks for your reply.


We checked with our technical colleague, based on the current, you can use our 12V 280Ah battery for your tongue jack, (a Lippert Power Stance 3,500 lbs #813748. Fused at 30 amps.)
onThe 12V 280Ah battery has a 200A BMS, can support a max load power of 2560W and deliver 3584Wh energy.
Best regards Patty

(Post continues): I had a hard time believing that two 200 AH BMS in parallel could not handle a 30 amp motor. IMO their reply still leaves gaps and I question doing business for a company that has that hard of time providing correct information. Others get it right the first try."
 
Last edited:
LiTime has changed their tune, at least a bit. This is a post on a different forum a couple of days ago:

"After a couple of email exchanges with LiTime they have now changed their public statement related to using their for jacks and slides, etc. I'm re-posting the first email and adding the second email says the opposite of the first.

Second email:


(Post continues): I had a hard time believing that two 200 AH BMS in parallel could not handle a 30 amp motor. IMO their reply still leaves gaps and I question doing business for a company that has that hard of time providing correct information. Others get it right the first try."
Unfortunately, many companies seem to have a huge "disconnect" between the actual product and it's capabilities, and what their customer service knows/shares with the consumer about their products. That is one of the many reasons that customer service overall has taken a big tumble over the years.
 

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