Motorcycle Batteries
From Open Source Ecology
- Up to 400W - [1]
- Lawn mower batteries are larger than motorcycle batteries [2]
- Mower batteries last 4 years [3]
- Lead acid is good for 1000 charge cycles. [4]
- Tesla batteries are good for 1500 charge cycles [5]
- Good U1 battery is 20A for 60 minutes [6].
- U1 - Walmart 340 CCA - [7]
- U1 - $25 - 230 CCA - [8]
- Note U1-R - R refers to Right side for terminal
- U1 bats have 35 ahr at 10 hr rate [9]
- If we have 20% of battery capacity available for lawn mower bats, that is 7 ahr. 4 batteries have 28Ahr - at 12V that makes for 336 watts.
- Cranking amps are 5-10 seconds. At 230 CCA - we have about 900A or 11kW.
- Impedance of a lawn mower battery - 3 ma? [10]
- Test - can 4 lawn mower batteries support a PV system of 3kW for 6 hours? Can 2 batteries do it?
- A battery has total max of 400Whr - so it is 80Whr sustainably. 4 batteries support 1600W for 1 hour. If voltage does not drop when using say 2 kW of load continuously - then the power is going directly from charge controller to inverter.
