Can I Use a 45 Watt Charger with My Schumacher SL1396 Jump Starter?
Understanding USB Charging Basics
The Schumacher SL1396 Jump Starter, like many portable power supplies, uses a USB input for charging. The USB input on the SL1396 is labeled with a 5V/2A requirement, which means it is designed to receive up to 2 amps of current at a 5 volt voltage from a compatible power source.
How Chargers Negotiate Charging
When you connect a 45 watt (which equates to 9 volts at 5 amps) charger to a USB port, the charger will attempt to negotiate the best charge rate and voltage with the powered device. This negotiation is done via the USB data lines. If the device (in this case, the Schumacher SL1396) is capable of accepting a higher charge rate, the charger will deliver it. However, in the safe battery management protocol, the device will only take the charge rate it needs, even if the charger offers more.
What Happens with a 45 Watt Charger?
In the case of a 45 watt charger and the Schumacher SL1396, the 45 watt charger will try to charge your jump starter at a maximum of 5 volts, but it will not exceed 2 amps unless specifically programmed to do so. This means that the jump starter will only take from the 45 watt charger what it needs – up to 5 volts and 2 amps. If the charger provides more current or voltage, the jump starter will safely adjust to not exceed its 5V/2A limit.
Important Considerations
While the negotiation process is generally safe and effective, it's important to note that no guarantees are provided by the manufacturer regarding the performance with non-standard chargers. Always refer to the user manual for specific guidelines. Improper use could damage the device or reduce its performance. In some cases, using a charger with a higher wattage than the device's requirement might slow the charging process or not fully charge the battery if the device automatically limits the charge rate.
Conclusion
In summary, a 45 watt charger should work with the Schumacher SL1396 Jump Starter, but it will only charge at the appropriate rate. This is a common practice with USB charging and generally does not cause issues. However, always prioritize the safety and integrity of your device by using a charger that is compatible with your jump starter’s specifications.