Ignition backup battery failure on run up - FX3

[Cactus Charlie]

That isn't a PS-1221S so, no, wrong form factor.

 

[lrobichaux]

this battery right ? dims 151 x 20 x 89h, 1.2Ah@1C discharge

1. have capacity greater than '3 amp hour'... 4ah
at a1.5A discharge rate, must use a LFP chemistry , no bms, just a balancer
2, have a loaded terminal voltage of at least 10 V after 1 hour discharge at 1.5A,ok
3. match the dimensions and terminal type of the Panasonic PS -1221S confirm this .. I think you can change the terminals from spade to another quick connect
4. draw no more than 5 A from a 14.2 V supply at any state of discharge. most likely
5. last at least 5 years including long periods of storage with no charging, probably
NOW,... how much would this be priced at ????? what would people be willing to pay ? certainly not even close to the $30 a ps1221 costs...

I think @Cactus Charlie 's point is that there would be demand (at least from the folks on this forum) for a safe, proven drop-in replacement for the PowerSonic battery, with minimal required alterations. While I wouldn't go so far as to say that cost would be "no issue," IMO it's fair to say that we understand that a robust, improved solution is gonna cost more (at least I do).

 

[newstuff]

' The solution to this was to replace the PS122S battery with a ......."
no ???

 

[newstuff]

So, throw out a price that would be acceptable....

 

[Neal]

This conversation quite frankly is quite odd and not the most professional if you are representing a business. First you need to understand the problem and what the limitations are that a replacement battery must meet in charge current limitations, and other limitations due to the Light Speed ignition used in our aircraft. You can read my thread on the ETX-104 I linked and do some study. You are focused on price before you seem to have a solution to offer. This is not presenting well for you, in my opinion.

Do your research, identify the problem, identify the requirements, come up with a solution. You're the vendor, you price it as you see fit. We are the potential customer and will decide if it meets our needs and the price represents the value.

I suggest starting over when you're ready bringing something to the table after you've done your homework, in a new thread.