comments:
If you have access to inexpensive lithium batteries where you are, I suggest getting a 48 volt lifep04 battery and charger along with a xt60 female ended cable with ring terminals on the other end to connect to your 48 volt battery. You can fully charge both your bluetti and extra battery in the morning when you have electricity. Then use the 48 volt battery to charge your bluetti via the solar input xt60 port as needed during the day. The 48 volt battery will charge your bluetti at 1000 watts which should be sufficient. This battery comes with a charger that takes 5-6 hours to fully charge the battery. If you need a faster charger, there are others available that can charge in under two hours. https://a.co/d/02Y2p9oU there are many youtube videos that show this hack. Note: this can be done with lower voltage batteries too but a 48 volt battery will charge your bluetti much faster than a 12 volt or even 24 volt battery. For reference, a 12 volt charges at 110 watts, a 24 volt battery charges at 500 watts. This is based on my testing with my elite 100 v2. The battery I linked has 2 1/2 times the capacity of the elite 200