I have a couple of go karts and Razor mx600 bikes ive Moses to 1800 w motors, controllers and LiFePo4 A123 AHR32113 ultra B cells 4500mah each. These big cells are capable of 100 amp discharge over and over and 6c charge rate. The 30 amps we intermittently throw at them while riding is nothing and won’t even warm them up. Downside is one side is aluminum and that’s hard to spot weld to. They are used at $10 each but test each for capacity they have all been excellent.
New to me is the EGO 56v lawn tools. I have a mower with a 7.5A pack. Fully charged the LiFe a123 cells are 58.4 and the li ion EGO are 57.9 off the EGO charger. The a123 I can charge at 6A for quick recharge. The new ego pack will charge in one hour. The cells are Samsung 20A capable 2500mah packs. I tested on several discharge levels and found the should be fine at up to 15 A intermittent use without over heating. 12.5A continuous increased temp 49F in 10min 5 seconds. Starting voltage not full but 4.06v and cut off set at 2.9v to preserve the cell.
The 7.5A EGO pack has 14 cells in series 3 parallel so should easily handle the intermittent 30 A max my controller will allow and provide extended riding by increasing capacity from 4.5Ah to 7.5Ah. All in I have about $230 to build the A123 pack with bms, but no charger. An ego 7.5A pack sells new online for $290 no charger but increased capacity and lots of protection built in including a hard case. If buying an EGO leaf blower, mower or snow blower you can opt for the 7.5A ego pack for less than $200 increase and includes the 550 watt fast charger. Are there better deals out there on built 58v packs with 7.5a capacity or more? I need it to be 30 capable. Anyone know where I can get the ego pack for less than $290 or a sale on backpack leaf blower or snowblower with 7.5A pack?
I’ll be comparing the two later today on the bike on hills.
New to me is the EGO 56v lawn tools. I have a mower with a 7.5A pack. Fully charged the LiFe a123 cells are 58.4 and the li ion EGO are 57.9 off the EGO charger. The a123 I can charge at 6A for quick recharge. The new ego pack will charge in one hour. The cells are Samsung 20A capable 2500mah packs. I tested on several discharge levels and found the should be fine at up to 15 A intermittent use without over heating. 12.5A continuous increased temp 49F in 10min 5 seconds. Starting voltage not full but 4.06v and cut off set at 2.9v to preserve the cell.
The 7.5A EGO pack has 14 cells in series 3 parallel so should easily handle the intermittent 30 A max my controller will allow and provide extended riding by increasing capacity from 4.5Ah to 7.5Ah. All in I have about $230 to build the A123 pack with bms, but no charger. An ego 7.5A pack sells new online for $290 no charger but increased capacity and lots of protection built in including a hard case. If buying an EGO leaf blower, mower or snow blower you can opt for the 7.5A ego pack for less than $200 increase and includes the 550 watt fast charger. Are there better deals out there on built 58v packs with 7.5a capacity or more? I need it to be 30 capable. Anyone know where I can get the ego pack for less than $290 or a sale on backpack leaf blower or snowblower with 7.5A pack?
I’ll be comparing the two later today on the bike on hills.