10-23-2025, 06:40 PM
I Soldered a new 5.5x2.5 barrel lug connector to 14AWG and all is well. I realized when doing it, that I likely never even tried to solder the tinned negative 14AWG wire to the contact, when I had the intermittent issue. The positive wire was soldered first then the negative was held in place by it. So I basically forgot, and seemingly never even soldered the negative wire in in the first place.
Wonder if I had been drinking.
Blame the beer.
I have ridden the Skate with range extender battery strapped to the deck, but didn't actually go far enough to where I needed the additional range I went about 7 miles and returned to 40.04 volts on both batteries.
The next day I knew I was not going to go far enough to require more capacity, and just removed the turtletop range extender, and it remains off.
My electronics Guru friend has a good sized Bluetooth speaker, that he finds incredibly convenient and says it is loud enough and sounds good enough that it gets a lot of use by himself and his wife. Battery life was about 6 hours when new and had fallen to 3 recently. I asked him what battery it had inside.
Eventually he opened it up and found a single 18650, rated at 2200mah.
He said there was room for 4 18650s in the battery tray, and sent me a photo,
I Said if he cut out the plastic corners and it looks like 4 21700's will fit side by side.
He agreed and I had him order 4 EVE 58E to send to me to spot weld together into a 1S4p. EVE 58E is basically the current top performing 21700 Energy cell at 5700mah capacity and a 16.8 amp CDR. Some Vapcell 21700's might have slightly more capacity at super low discharge rates, but their cycle life is questionable, and the base cell they rewrap can change at any time.
I just finished building a 1S4P of EVE 58E.
22.8 amp hours
82.08 Watt hours
Max discharge rate 67.2 amps
Well, I only ran 18 awg wire so that rating of 4 58E cells in parallel is a bit tongue in cheek.
I did use 0.2mm THICK 10MM wide copper under 0.1mm stainless steel sandwich.
The small green PCB is a BMS/ protection board, to prevent over charge or overdischarge and overcurrent( 14 amps)
I am leaving this for him to solder to the 18 awg wires from battery in an orientation which makes the most sense, and solder the wires to power the load and perhaps to ad additional separate charge circuit, to bypass USB micro charging.
These cells are rated for a standard charge rate of 1.12 amps each so 4 in parallel is 4.48 amps. max charge rate is 5.6 amps per cell, but max charge rates are a bit of a never go here unless it is an absolute emergency and you do not care about battery longevity thing.
He sent me 4 Additional Eve 58E as a gift, so I am likely to build a 3S1P 11.1v nominal battery from them. I have 2 other 3s1P batteies, made from 2000 mah 10 amp CDR 18650's, that still work surprisingly well and get a LOT of use. but a 3S1P of Eve 58E will have almost 200% more capacity, and is only a little bit bigger.
I was gonna make a 3s1P from EVE 40PL, 4000mah 70 amp CDR( to 80c temp cut), using the same 40 amp 3S BMS I used on my Samsung 50E 3S4P.
I honestly do not need a tiny 12v battery with the capability to pulse 70 amps.
So I will need to find a task for those 3 extra Eve 40PL's.
I also have 10 more BAK45D I can make into a 10S1P.
And I have an Eve 40PL 10S1P at the half built stage already.
I have a Fiberglass enclosure built for my lightweight mini esk8. Pretty close to being done.
it is housing my old 10s2P right now for my turtle top range extender.
That enclosure has a huge heatsink, built for two older V ESC's,
I still have a bad taste in my mouth from trying to get VESCtool to work properly and am reluctant to commit the frustration of likely failure. These old vescs require a much older version of vesctool to work and I am not confient in my ability to down load the right version and the firmware and then getting the motors to detect properly and all the other stuff I failed at previously..
I have ordered a newer version of the ESC I now have ~2500 miles on, which is said to have even stronger brakes.
I plan to put this new ESC with Fancier remote into the rolling gupp, y and the older ESC into the Mini enclosure. I have two different sets of hub motors I can use to power the lightweight Mini worn 83mm( now about 76mm) and the Puaida motors with 90mm sleeves.
but I need to finish the 10S1P Eve 40PL, and then get all the wiring sorted out.
The lightweight mini has such a short wheelbase that it will have more torque and top speed than I want it to have with either set of my hub motors, but it should fit nicely into the kayak hatch,and it should have at least 6 miles of range, towing Fiona.
The weather is getting cooler and the water does not look as nasty now that the rainy season appears to be over, and I need to rekindle Fiona's interest in Cormorants and make every day with her as good as I can make it for her.
Wonder if I had been drinking.
Blame the beer.
I have ridden the Skate with range extender battery strapped to the deck, but didn't actually go far enough to where I needed the additional range I went about 7 miles and returned to 40.04 volts on both batteries.
The next day I knew I was not going to go far enough to require more capacity, and just removed the turtletop range extender, and it remains off.
My electronics Guru friend has a good sized Bluetooth speaker, that he finds incredibly convenient and says it is loud enough and sounds good enough that it gets a lot of use by himself and his wife. Battery life was about 6 hours when new and had fallen to 3 recently. I asked him what battery it had inside.
Eventually he opened it up and found a single 18650, rated at 2200mah.
He said there was room for 4 18650s in the battery tray, and sent me a photo,
I Said if he cut out the plastic corners and it looks like 4 21700's will fit side by side.
He agreed and I had him order 4 EVE 58E to send to me to spot weld together into a 1S4p. EVE 58E is basically the current top performing 21700 Energy cell at 5700mah capacity and a 16.8 amp CDR. Some Vapcell 21700's might have slightly more capacity at super low discharge rates, but their cycle life is questionable, and the base cell they rewrap can change at any time.
I just finished building a 1S4P of EVE 58E.
22.8 amp hours
82.08 Watt hours
Max discharge rate 67.2 amps
Well, I only ran 18 awg wire so that rating of 4 58E cells in parallel is a bit tongue in cheek.
I did use 0.2mm THICK 10MM wide copper under 0.1mm stainless steel sandwich.
The small green PCB is a BMS/ protection board, to prevent over charge or overdischarge and overcurrent( 14 amps)
I am leaving this for him to solder to the 18 awg wires from battery in an orientation which makes the most sense, and solder the wires to power the load and perhaps to ad additional separate charge circuit, to bypass USB micro charging.
These cells are rated for a standard charge rate of 1.12 amps each so 4 in parallel is 4.48 amps. max charge rate is 5.6 amps per cell, but max charge rates are a bit of a never go here unless it is an absolute emergency and you do not care about battery longevity thing.
He sent me 4 Additional Eve 58E as a gift, so I am likely to build a 3S1P 11.1v nominal battery from them. I have 2 other 3s1P batteies, made from 2000 mah 10 amp CDR 18650's, that still work surprisingly well and get a LOT of use. but a 3S1P of Eve 58E will have almost 200% more capacity, and is only a little bit bigger.
I was gonna make a 3s1P from EVE 40PL, 4000mah 70 amp CDR( to 80c temp cut), using the same 40 amp 3S BMS I used on my Samsung 50E 3S4P.
I honestly do not need a tiny 12v battery with the capability to pulse 70 amps.
So I will need to find a task for those 3 extra Eve 40PL's.
I also have 10 more BAK45D I can make into a 10S1P.
And I have an Eve 40PL 10S1P at the half built stage already.
I have a Fiberglass enclosure built for my lightweight mini esk8. Pretty close to being done.
it is housing my old 10s2P right now for my turtle top range extender.
That enclosure has a huge heatsink, built for two older V ESC's,
I still have a bad taste in my mouth from trying to get VESCtool to work properly and am reluctant to commit the frustration of likely failure. These old vescs require a much older version of vesctool to work and I am not confient in my ability to down load the right version and the firmware and then getting the motors to detect properly and all the other stuff I failed at previously..
I have ordered a newer version of the ESC I now have ~2500 miles on, which is said to have even stronger brakes.
I plan to put this new ESC with Fancier remote into the rolling gupp, y and the older ESC into the Mini enclosure. I have two different sets of hub motors I can use to power the lightweight Mini worn 83mm( now about 76mm) and the Puaida motors with 90mm sleeves.
but I need to finish the 10S1P Eve 40PL, and then get all the wiring sorted out.
The lightweight mini has such a short wheelbase that it will have more torque and top speed than I want it to have with either set of my hub motors, but it should fit nicely into the kayak hatch,and it should have at least 6 miles of range, towing Fiona.
The weather is getting cooler and the water does not look as nasty now that the rainy season appears to be over, and I need to rekindle Fiona's interest in Cormorants and make every day with her as good as I can make it for her.
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