EV charging Level 2, 48 A: how much battery you need
EV charging Level 2, 48 A draws about 11500 W (11500 W range), runs 100% of the time and uses 46000 Wh per day. Start-up surge: 11500 W.
ChargePoint Home Flex at 48 A delivers 11,500 W. On backup, set the charger to its lowest current.
Battery needed
| Hours | Wh | Battery (Wh) | Inverter (W) |
|---|---|---|---|
| For 8 hours | 15333 | 23233 | 12651 / 11500 |
| For 24 hours | 46000 | 69697 | 12651 / 11500 |
| For 72 hours | 138000 | 209091 | 12651 / 11500 |
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Stations that fit (24 h)
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FAQ
How many watts does a EV charging Level 2, 48 A use?
Typically 11500 W while running, with a range of 11500 W depending on model and age. Start-up surge can reach 11500 W.
How long will a 1000 Wh power station run a EV charging Level 2, 48 A?
About 0.1 hours on the clock, allowing for the 100% duty cycle, inverter losses and a 20% reserve.
What size power station do I need for a EV charging Level 2, 48 A overnight (8 h)?
About 23233 Wh of battery and an inverter rated at least 12651 W continuous with 11500 W surge.
Can I run a EV charging Level 2, 48 A on solar during an outage?
You need roughly 30667 W of panels in winter to replace a day's use (46000 Wh), charging through a station with a big enough MPPT input.
Other sizes
Other appliances
1 Approximate values: estimated from motor or heater power and typical figures published online, not from a manufacturer chart. Check your appliance label.
Inverter efficiency 88%, usable depth of discharge 90%, reserve 20%. Full method: How we calculate. source