Hi guys! Pretty new on this forum!
I have a couple of questions regarding the charging system/regulator/LIFEPO4 battery.
- I am currently building a CB750 K(z) 1979 with an M-unit and all LED lights
https://ibb.co/K9nMMqr
I bought a Ultrabatt Multimighty 12200M+ 150CCA and connected this in the correct way with an 40Amp fuse to my M-unit.
After starting, I drove for 10 minutes, the next day I tried to turn over the engine and the battery shut off right away.
0V on the battery so the BMS probably secured the battery against full discharge.
I am using the Rick's Electrics Lithium Ion Reg/Rec, for CB750-1000 (€179) https://www.caferacerwebshop.com/nl/honda-cb-750-1000-lithium-ion-gelijkrichter-regela.html
In combination with the M-unit Blue and LifePo4 battery
Stator/Starting engine is original.
I measured a couple of things with the original Lead acid 14Ah battery connected (charged)
- Pulled out the ground from the ignition so the engine wouldn't ignite, turned over the starter engine for 5-7sec and had 100-110 Amps
- Measured the amperage when revving the engine and this got up to 8A load current to the battery (too much??)
Now my questions are:
- 100-110 Amps for the starting motor is normal after some research? (0,7kw starting motor)
- 8A too much for the 12v 2,5Ah LifePO4 battery? Reg/rec defect?
- Why does my 40Amp fuse reject to burn after loading it with 110Amps for 4sec??
The battery wouldn't go up to 0-30% with the optimate LifePo4 charger, so I emailed Ultrabatt and they will give me 40% discount on purchase of 2 of those batteries because 2,5Ah, equivalent of 8Ah lead acid, and the original battery was 14Ah lead acid. So they suggest putting in 2 of them minimum.
So the guys of ultrabatt think I overdid it with the starter motor and pulled more than 150A
What do you guys think of the situation?
Reg/rec?
Battery?
I have a couple of questions regarding the charging system/regulator/LIFEPO4 battery.
- I am currently building a CB750 K(z) 1979 with an M-unit and all LED lights
https://ibb.co/K9nMMqr
I bought a Ultrabatt Multimighty 12200M+ 150CCA and connected this in the correct way with an 40Amp fuse to my M-unit.
After starting, I drove for 10 minutes, the next day I tried to turn over the engine and the battery shut off right away.
0V on the battery so the BMS probably secured the battery against full discharge.
I am using the Rick's Electrics Lithium Ion Reg/Rec, for CB750-1000 (€179) https://www.caferacerwebshop.com/nl/honda-cb-750-1000-lithium-ion-gelijkrichter-regela.html
In combination with the M-unit Blue and LifePo4 battery
Stator/Starting engine is original.
I measured a couple of things with the original Lead acid 14Ah battery connected (charged)
- Pulled out the ground from the ignition so the engine wouldn't ignite, turned over the starter engine for 5-7sec and had 100-110 Amps
- Measured the amperage when revving the engine and this got up to 8A load current to the battery (too much??)
Now my questions are:
- 100-110 Amps for the starting motor is normal after some research? (0,7kw starting motor)
- 8A too much for the 12v 2,5Ah LifePO4 battery? Reg/rec defect?
- Why does my 40Amp fuse reject to burn after loading it with 110Amps for 4sec??
The battery wouldn't go up to 0-30% with the optimate LifePo4 charger, so I emailed Ultrabatt and they will give me 40% discount on purchase of 2 of those batteries because 2,5Ah, equivalent of 8Ah lead acid, and the original battery was 14Ah lead acid. So they suggest putting in 2 of them minimum.
So the guys of ultrabatt think I overdid it with the starter motor and pulled more than 150A
What do you guys think of the situation?
Reg/rec?
Battery?