MR/1 calculator

Charge Time Calculator

Estimate charging time from battery capacity, charger output, and state-of-charge range. Use kWh directly, or convert from amp-hours and voltage when that is the information available.

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Enter Your Charging Scenario

Battery capacity

Enter kWh

Use this when capacity is listed in kilowatt-hours.

Enter Ah + Voltage

Use this when capacity is listed as amp-hours and system voltage.

Battery capacity kWh

Battery capacity Ah

Battery voltage V

Charger output

Charge range SOC %

From

Starting SOC

Target SOC

Estimated charge time

4h 40m

4.67 hours

Battery capacity used7.00 kWh

SOC increase60%

Energy needed4.20 kWh

Charger power0.90 kW

Formula4.20 ÷ 0.90

This is a simple estimate and does not account for charging losses, tapering, temperature, battery-management limits, or vehicle/system-specific behavior.

Common Golf Cart Charging Cables vs. WiTricity MR/1 900

Standardized comparison based on a 7kWh battery pack charged from 20% to 80% SOC.

Charger Category	Output	Lead-Acid	Lithium Ion	Est. Charge Time (20%–80%)
Standard OEM Cable	13A	Yes	Profile update required	7.0–8.0 hrs
Mid-Range OEM Cable	~15–17A	Yes	Limited	5.5–6.5 hrs
Upper-Tier OEM Charger	17–19A	Yes — profile swap	Yes — profile swap	5.0–5.5 hrs
Premium Lithium OEM Charger	25A	No	Yes — only	3.8–4.5 hrs
WiTricity MR/1 900	20A	Yes — Native	Yes — Native	~4.6 hrs

OEM categories are based on charging equipment commonly distributed with leading golf cart manufacturers.

The WiTricity MR/1 900 outperforms the standard and mid-range OEM chargers distributed by the majority of leading golf cart manufacturers, delivering a full 20%–80% charge in approximately 4.6 hours. It also eliminates charging cables and connectors entirely, reducing maintenance, improving safety, and adding everyday convenience — drivers simply park and charge. MR/1 900 natively supports both lead-acid and lithium battery chemistries, with no profile swaps or hardware changes required.