Battery & Solar (1) Is the battery user replaceable?(2) Can battery be recharged with 13 watt solar panel?
1614445
I have 2 of these. I have tried charging them, one at a time, with a 20 watt solar panel. They don't charge ... they discharge with the solar panel. I had a Xantrex XPower PowerPack 4 that did charge with the 20 watt solar panel.
32697
Calculator is solar powered only. It is not possible to replace the solar cell. Even if that were possible it would probably exceed the original price of the calculator. The good news is; the solar cell is quite effective and the calculator works well even in dim lighting conditions. I tried it at night under some outdoor lights & it worked fine. Calculator will eventually pay for itself by not having to buy regular batteries. Hope this answers your question.
1504269
Glad to help! Is the 13.5 number you mentioned the Amp load? The Amp load is one of the two pieces of information that would be very helpful. The other would be how long you would estimate the AC unit would be running per 24 hours. With those two pieces of information we can calculate how many panels would be needed and the battery bank size needed for your power storage requirements. Regards, Lisa, for Explore Electric
273941
I don't know about solar panels, I've run mine on a 12v deep cycle battery for about 28 hrs, and it was working fine.
2257381
I've found that a 100-120 watt solar panel will be able to recharge this system from empty to 80-90% full in a good sunny day's worth of sun. It takes the full day to do it and if it's cloudy or worse then expect 2-3 days depending on conditions. You will need to add a solar charge controller to help with the task and to protect the battery from being over charged.
1473755
To be honest I don't understand your question. Yes you can use a rechargeable battery
148161
Of course friend, the panel is high efficiency, full sun generates 22 volts, you need a charge controller 12 Volt so you do not overload the system, it will keep you charged and when the battery is charged, disconnect, which prevents damage to your batteries!
386083
Yes, solar and battery are perfect. It's designed at 12 v, just like battery, and solar is too.
1622878
I seem to remember the package saying the solar panel also charges the battery. I have had mine for over two years and have never needed to replace the battery. Looking at the back it doesn't seem to be made to open up.
990636
Battery in question is 100ah x12v = 1200 watt hours. This panel can provide 144 watts per hour for battery charging purpose. Rule of thumb batteries should not be drained more then 50% or maximum 80% otherwise battery life will be compromised, so we will consider 600 watts to be charged. 600 watts divide by 144 watts = 4.16 hours. Since this panel is 24 volt and your battery is 12v - MPPT charge controller is highly recommended. MPPT charge controller can accept higher voltage (24~36 volt) from the solar panel and charges a lower voltage battery (such as 12v). Morningstar SS-MPPT-15L will be a good charge controller for this setup. Battery in question is 100ah x12v = 1200 watt hours. This panel can provide 144 watts per hour for battery charging purpose. Rule of thumb batteries should not be drained more then 50% or maximum 80% otherwise battery life will be compromised, so we will consider 600 watts to be charged. 600 watts divide by 144 watts = 4.16 hours. Since this panel is 24 volt and your battery is 12v - MPPT charge controller is highly recommended. MPPT charge controller can accept higher voltage (24~36 volt) from the solar panel and charges a lower voltage battery (such as 12v). Morningstar SS-MPPT-15L will... » Read More Battery in question is 100ah x12v = 1200 watt hours. This panel can provide 144 watts per hour for battery charging purpose. Rule of thumb batteries should not be drained more then 50% or maximum 80% otherwise battery life will be compromised, so we will consider 600 watts to be charged. 600 watts divide by 144 watts = 4.16 hours. Since this panel is 24 volt and your battery is 12v - MPPT charge controller is highly recommended. MPPT charge controller can accept higher voltage (24~36 volt) from the solar panel and charges a lower voltage battery (such as 12v). Morningstar SS-MPPT-15L will be a good charge controller for this setup. « Show Less
1579316
I charge mine with the Anker 14watt solar panel. You can also charge it using a usb cord. Just connect it to a computer or any other usb port that has the ability to charge. Great battery.
242174
Yes. You can replace with rechargeable or alkaline batteries easily. Do not try to recharge alkaline batteries. They would only be used to recharge a cell phone or something similar. Rechargeable batteries have many cycles before they have to be replaced. They are environmentally friendly. I did not feel that the solar charge feature worked well. The USB cord plugged into external power, works best.
473704
Definitely not easily user replaceable, the battery is soldered to the board. My battery swelled up after several years of service, so I broke open the case to recycle the battery. Never tried running from USB power only.
1087844
Yes. Normally the battery can last about 2 years or more. The battery is inside the solar panel, need release the several screws.
982886
i have 28W solarpanel which produces voltage between 15 and 21V depending on sunlight. Can this battery be charged with variable Dc Volt from the solar panel? will it damage battery ?
2000515
Yes, it takes both a battery, which you can get at a local auto parts store, and a solar panel of the correct wattage/voltage.
1539323
This item has AA Mi-Mh, 600 mA 3.6V Rechargeable Battery inside. Yes, it can be replaced if the battery is no longer good. Thank you! Best Regards, Solarrific Customer Service Team