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Place the watch in direct sunlight of sunrise or sunset for a few weeks and also bright light but not hot light. Wear as usual in direct sunlight as the occasion allows. Once these kind of batteries are discharged, they need quite some time to recharge. Wearing a new solar watch most of the time indoors with bright light only, is normally not enough but once the battery reaches full charge, the extra bright light conditions can be relaxed.
If you hook it up correctly and the Voltages match... yes.
As for how long... THAT depends on a number of Factors... How much sun, What quality is the Solar Panel, Placement of the Panel.. the goes on and on... But you CAN charge a Battery...I charged a Battery for quite some time using a Large Solar array.... We were Camping an using the Battery for Lights Radio and Fridges.... So it CAN be done
The UPS has a stated output, that does not change. It is most likely 115vAC. If the UPS does not have enough charge, it will warn you. If you are asking if you can connect your solar direct, no, do not! The UPS is not a charge controller or regulator which is what I think you are asking. Summary: Solar to UPS to appliance is ok. If you exceed the amperage of the UPS, again, an alarm will sound or not work at all. for instance, you will not power a microwave this way.
It sounds like the panel's tabs were wired incorrectly or incompletely. I recommend you get a new solar panel since it seems like only one cell is outputting voltage for you now (2v cell). If possible, have the manufacturer warranty it for you since it should be putting out in excess of 14 volts in direct sunlight on a cold day.
For first time use solar light needs to charge in full sunlight for 8-12 hours with the switch in the "ON" position to allow the rechargeable battery to reach maximum capacity.
There is also a protective film on the solar panel that needs to be removed.
After doing that, fully charging the battery with the switch in the "ON" position, then if the light does not turn on, remove the 4 screws from the solar cell assembly, remove the battery, wipe both ends and reinstall battery. Make sure the battery is making secure contact with the terminals. I had a new one and the battery was loose inside, making the light go on and off. I reseated the battery and all is well.
However you should not have to replace the battery or the unit, it should still be under warranty if you just bought it. Westinghouse guarantees this unit for one year.
A description is here
Waranty information is here
I would counsel you to just take the unit back for exchange or refund, as the warranty has an exclusion clause and one of the exclusions is if the unit has been opened. Opening the unit might invalidate the warranty.
Hello Phil, what is the size of your solar panel? This pump draws 17 watts so, your panel must be 17 watts or greater. Remember a solar panel only puts out full power when in direct sunlight and facing the sun directly. You can read 21 volts but your amperage may not be full and this is why your pump is not running, not enough amps. I would recommend a minimum of a 20 watt panel.