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Engines / Re: Lister SL2 governor?
« Last post by oldgoat on January 09, 2022, 11:43:47 AM »
I think its time to pull the front cover off and check for wear in the pivots and also whether you have the correct governor springs. For 1700 to 1800 rpm the governor springs have red paint marks on them. The speeder spring should also have a red paint mark on it.
Engines / Re: Lister SL2 governor?
« Last post by cobbadog on January 09, 2022, 10:13:21 AM »
Have you looked at the governors' workings as yet? Do you have a workshop manual to help you go through the steps of checking it and setting it correctly. You may simply have a stuk weight or similar.
As for the generator do you think the problem might be there? I know nothing about gensets  but there are some very clever members in the generator section. Maybe start a thread there as well or bring this thread to their attention with a link here.
Are all the basic things in good working order? Air, fuel and oil filters all good and clean.
Everything else / Re: Lithium cell balancing
« Last post by BruceM on January 09, 2022, 08:33:18 AM »
This video is unfortunately lacking in legitimate technical information, nothing about what he's doing for BMS/cell balancing, or how he divided up the high voltage packs.  Seems he's set up for a nominal 48V inverter/battery bank, but that's not clearly presented either.  He states he has only put this battery bank together a week ago; so has zero meaningful experience.

His diagram showing Volt and other battery packs in parallel is wildly misleading- the stock packs are high voltage and must therefor be reconfigured to a nominal 48V, if that is what his Magnum inverter is designed for.  I don't know the voltage of the stock battery sub-assemblies of cells are; he has left out all the useful information.

Everything else / Re: Lead acid battery bank confusion
« Last post by BruceM on January 09, 2022, 12:26:26 AM »
Reconfiguring the cells for a 24V or 48V setup should be an interesting project.   I look forward to seeing your progress!

There are some decent, inexpensive add on BMS/balancer  systems available.  I'd suggest doing that.  Cheap insurance since the Lithium ion cells are ruined permanently with over/undervoltage. The BMS would disconnect charging on single cell overvoltage, disconnect load with single cell undervoltage.  Important for fire protection as well. 

One gotcha to avoid;if you use a cheap MPPT PV regulator that is buck converting from a high voltage PV array, it is wise to use either a BMS with voltage rating above the PV voltage, or add an overvoltage crowbar or disconnect to prevent a failed PV regulator from connecting the PV high voltage to the battery's BMS.  The MOSFETs in the PV regulator normally fail shorted from input to output, and in a buck converter that means it's a full on. This causes an overvoltage failure, full on short of the BMS overvoltage disconnect so full PV power was connected to the battery.  This is not conjecture on my part, but a reported failure including photos, with a brand new lithium pack worth over $5K destroyed.  The alternative solution is to limit PV voltage to the rated max voltage of the BMS disconnect.
Engines / Lister SL2 governor?
« Last post by stevo42 on January 08, 2022, 11:55:54 PM »
My SL2 is belt driving a 5KW ST generator that wont hold cycles at 60. It doesn't fluctuate a lot. My belts could be a little tighter but I believe they are fine. I used some belt dressing and gave it a try, but no change so, as had been suggested, it might be a governor problem. I really cant hear any RPM change as I adjust the speed but it doesn't seem to take much to effect the cycles.  When I run my SL1 with the "Northern" generator the cycles are nice and steady.  Any help would be appreciated.  Steve
Everything else / Re: Lithium cell balancing
« Last post by Tanman on January 08, 2022, 10:43:20 PM »
This guy is running a Nissan Leaf lithium pack and Chevy volt lithium packs in parallel with no BMS seemingly without issues:

Everything else / Re: Lead acid battery bank confusion
« Last post by Tanman on January 08, 2022, 10:17:42 PM »
So the nominal voltage of each cell in the prime pack is 3.7 volts, so 13 of them would put me at a 48.1 nominal voltage. Iíve also seen some guys run them without bms, they just put low amp fuses on each string and keep an eye on them.
Lister Market Place (things for Sale) / Re: ST-5 5KW Generator Head FOR SALE
« Last post by veggie on January 08, 2022, 04:03:06 PM »
been watching this for a while,  but i have have yet to find an engine for it
i believe you are in ontario ?  so am i
get in touch please

Nope. Western Canada.

Generator is still for sale
Everything else / Re: Lead acid battery bank confusion
« Last post by BruceM on January 07, 2022, 05:23:33 PM »
Hi Tanman,
I'm not familiar with the Prius Plus battery packs and their BMS, but note that they are high voltage (>200V)  batteries that could not be directly used with standard off grid 24 or 48V input inverters and PV charge regulators.

Have you found a home power system that is directly compatible and interfaces to the BMS system so you can monitor battery pack health and balance?  Rebuilding a new battery with the old cells to make a lower voltage battery with a new BMS would be possible but is a significant technical effort.

Lithium Iron Phosphate batteries are more appealing to me due to much better fire safety.  There are some server rack LFP battery systems that are more home power system suitable; they have a built in BMS and are directly compatible with 24 or 48V input inverters and PV charge regulators.

Best Wishes,

Everything else / Re: Lead acid battery bank confusion
« Last post by Tanman on January 07, 2022, 06:15:46 AM »
Okay, so I returned my bank. They werenít really happy about it, but processed it lol. I also recently discovered that a local auto place sells lithium ion ev car batteries that have been removed from crashed cars. They are selling a Prius Prime 8.8kwh pack for around $1450! (I can go pick it up with my truck) The vehicle only had 12,000 miles on it! This seems like the way to go.
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