[2500 Cycles] Feels high quality and durable, come with all kinds of adapters you will need!

[16.2 VDC] Bought this last March,2024 in advance of hurricane season. Luckily, we did not have a direct hit. Having a Yashino 2000 solid state for standby use is reassuring!
I checked the charge on it today and applied load. Everything is up to par.... now to prepare for winter outages.

[2 Hours] I purchased two of these units with solar panels for emergencies and have been using them to supplement electric bills while waiting for that big emergency. This is a win win for me. Am waiting for additional battery packs to ad to units. Performance so far is much better than expected.

[16.2 VDC] I love the compact, high-energy density size. It makes it much easier to pack. And the app control is really convenient to monitor the battery input and outputs.

[15.09 lb] [This review was collected as part of a promotion.] The solid state power station blows away other forms of battery storage. I will now be upgrading to a 2kw plus solid state power station after using the Yoshino B330.

[2 Hours] I bought this battery a few months ago to power my CPAP and also, my portable BougeRV refrigerator/freezer while on remote camping trips. Last week, we were in a primitive area adjacent to Big Bend National Park for 7 days. Together, these two items pulled between 550 to 600 watts a day. After 4 days, the battery was down to under 10 percent charge. I had anticipated this before the trip and had a gasoline generator on hand to recharge the battery back to full charge in a little over an hour. Two other campers on this trip also brought rechargeable batteries from different manufacturer. One was recharging every day, and the other was recharging every other.day. All in all, I am very pleased with this product.

[Lithium] I bought the B4000 for stand by power and I used my it to power my camper and it worked flawless, and had enough power to rum the A/C. I was impressed that the charge was still full after sitting through the winter.

[2500 Cycles] Purchased my B4000 3 months ago for my 30-amp Lance Truck Camper. Truck Camper is awesome, it allows you to camp anywhere a car could go. But didn’t want to start the generator in the early AM so as not to disturb the campsite.

Got to have my coffee (coffee maker), warm oatmeal (microwave) and of course toast (toaster oven) very early in the morning. All need high amperage 120-volt clean power.

The Yoshino plugs right into my 30-amp Lance Truck Camper cable providing the needed power easily, quietly and environmentally with very effective clean (sine wave) power!

Also, the B4000 ran my roof AC for just over two hours. Great for closing the Truck Camper for a bit to cool down but also very practical when avoiding smokey campfires. Kept the thermostat at 69 degrees!

This little B4000 saved me a ton of money not having to install solar panels, switches, control panels, an inverter along with lots of labor. Along with a loss of storage space to my camper. Coffee, toast and a quick micro-wave re-heat makes my camping fun !

My constructive comments would be to work on the WIFI connection process making it more intuitive. A clear explanation on how to connect or reconnect to WIFI and understanding where Blue Tooth connections are taking place is needed. Especially if your traveling from home base WIFI.

The B4000 Yoshino Battery is awesome, looking forward to extended (add on) battery options!

[2500 Cycles] I previously bought the B4000 SST and wanted a smaller unit for my cabin and I am pleased with the B660 SST. It has the same high quality form factor as the B4000 and has met my expectations. I like being able to monitor the unit with the app when I am away from the property. I am looking to purchase more B660s and B4000s in the near future for my other properties.

[16.2 VDC] Wow, quick recharge and lighter that my other devices