twiggy144
Well-known member
I have a power meter (I had bought off ebay) to measure the power used by several domestic appliances. It measures the voltage, the current in amps, the instant power ( volts x amps) and accumulates the power consumed in KWH . I validated the precision of this power meter in various conditions, with various appliances, and I can vouch it is very accurate, with a +/- 5% reading error.
I plugged this power meter between my house wall outlet and my 2025 Outlander's 120 Volt charging cable, and I recorded the kwh for each recharge over a period of three weeks, or approximately 10 recharging cycles. Here are my findings so far.
The average ambiant temperature varied between 0C and -12C for this observation period.
The voltage at my power outlet varied between 115 V and 121 Volts.
Before and after each recharge, I recorded the battery state of charge ( SOC) from the dashboard in sixteenths, from zero to 16 sixteenths, corresponding to the number of bars displayed in the battery SOC meter.
When the battery SOC is between zero and 14/16 , the charging amperage is stable between 10.9 and 11.1 amps.
Once the battery SOC exceeds 14/16, the charging amperage reduces to 3.5 amps.
The accumulated power measured by the power meter for a full charge from zero SOC to 16/16 is 20 KWH, whis is exactly the capacity of the battery as claimed by Mitsubishi.
I observed the accumulated power measured by the power meter while the battery SOC was gradually climbing from 1/16 to 14/16, it matches exactly the power accumulated as displayed in the SOC, given each 1/16 is equivalent to 1.25 kwh ( 20 kwh divided by 16 = 1.25 kwh). This means the time lapse recharging curve is linear (directly proportionnal) between zero and 14/16 SOC.
Time for a full recharge varies between 16 and 17 hours, which matches the full recharging time claimed by Mitsubishi ( 16 hours).
Because my power meter measured 20 kwh used for a full recharge of the 20kwh battery, (with an error of +/- 5% reading on my power meter), there appears to be a negligeable loss of power in heat during the recharging process.
I observed the km range as displayed by the guess-o-meter during my experiments. The estimated range displayed is way too wild to estimate the energy stored in the battery. We all now know the guess-o-meter varies way too much and uses too many varying parameters such as HVAC operation, seat heaters, driving mode, etc. Fortunately, at least the battery SOC displayed by the number of bars between 1 and 16 reflects accurately the energy stored in the battery as per my findings.
Comments?
I plugged this power meter between my house wall outlet and my 2025 Outlander's 120 Volt charging cable, and I recorded the kwh for each recharge over a period of three weeks, or approximately 10 recharging cycles. Here are my findings so far.
The average ambiant temperature varied between 0C and -12C for this observation period.
The voltage at my power outlet varied between 115 V and 121 Volts.
Before and after each recharge, I recorded the battery state of charge ( SOC) from the dashboard in sixteenths, from zero to 16 sixteenths, corresponding to the number of bars displayed in the battery SOC meter.
When the battery SOC is between zero and 14/16 , the charging amperage is stable between 10.9 and 11.1 amps.
Once the battery SOC exceeds 14/16, the charging amperage reduces to 3.5 amps.
The accumulated power measured by the power meter for a full charge from zero SOC to 16/16 is 20 KWH, whis is exactly the capacity of the battery as claimed by Mitsubishi.
I observed the accumulated power measured by the power meter while the battery SOC was gradually climbing from 1/16 to 14/16, it matches exactly the power accumulated as displayed in the SOC, given each 1/16 is equivalent to 1.25 kwh ( 20 kwh divided by 16 = 1.25 kwh). This means the time lapse recharging curve is linear (directly proportionnal) between zero and 14/16 SOC.
Time for a full recharge varies between 16 and 17 hours, which matches the full recharging time claimed by Mitsubishi ( 16 hours).
Because my power meter measured 20 kwh used for a full recharge of the 20kwh battery, (with an error of +/- 5% reading on my power meter), there appears to be a negligeable loss of power in heat during the recharging process.
I observed the km range as displayed by the guess-o-meter during my experiments. The estimated range displayed is way too wild to estimate the energy stored in the battery. We all now know the guess-o-meter varies way too much and uses too many varying parameters such as HVAC operation, seat heaters, driving mode, etc. Fortunately, at least the battery SOC displayed by the number of bars between 1 and 16 reflects accurately the energy stored in the battery as per my findings.
Comments?
