UPDATE: Seller got in touch with me right away. Says the extra batteries WILL be available about May 2025. I've raised my rating from1 to 3 stars due to their quick response and clear answer. Will have to now wait and see if they actually offer additional batteries in the Spring. If so, I'll UPDATE my review again. ORIGINAL REVIEW: Works GREAT as a standalone unit, but one of the reasons I bought THIS unit (Ampace 1500) was because they promoted that you could connect additional batteries to extend usable time. GONE from their website, GONE from their tugapower.net Store, are ANY mention of those additional battery packs. From the user manual: "An additional battery can be connected to increase the power capacity of the Andes 1500." "Using extra battery -This product can be connected with up to seven extra batteries at the same time, to meet higher capacity needs." (The image is from the manual, too.) Now I'm wondering how dependable the company is for other claims. I noticed another reviewer gave a lower rating for the same reason, too. Are there extra batteries for this? If so, what is the cost and availability? If not, can I get a full refund on my purchase (from) Oct 8, 2024? I'll update my review/rating after getting a response from Ampace.

Bought this for an Exo-Worthy 200w kit made it to 300w and it works great but does not charge the battery fast enough do yourself a favor and buy 200w panels or higher 100w is not enough to charge a 12v 100mah battery in one day with 4 hours of sunlight minimum