EV charging Level 2, 16 A: how much battery you need
EV charging Level 2, 16 A draws about 3800 W (3800 W range), runs 100% of the time and uses 15200 Wh per day. Start-up surge: 3800 W.
ChargePoint Home Flex at 16 A delivers 3,800 W. On backup, set the charger to its lowest current.
Battery needed
| Hours | Wh | Battery (Wh) | Inverter (W) |
|---|---|---|---|
| For 8 hours | 5067 | 7677 | 4180 / 3800 |
| For 24 hours | 15200 | 23031 | 4180 / 3800 |
| For 72 hours | 45600 | 69091 | 4180 / 3800 |
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Stations that fit (24 h)
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FAQ
How many watts does a EV charging Level 2, 16 A use?
Typically 3800 W while running, with a range of 3800 W depending on model and age. Start-up surge can reach 3800 W.
How long will a 1000 Wh power station run a EV charging Level 2, 16 A?
About 0.2 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, 16 A overnight (8 h)?
About 7677 Wh of battery and an inverter rated at least 4180 W continuous with 3800 W surge.
Can I run a EV charging Level 2, 16 A on solar during an outage?
You need roughly 10134 W of panels in winter to replace a day's use (15200 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