BLUETTI B300K Expansion Battery, 2764.8Wh LiFePO4 Battery Pack for Power Station AC200L AC300 AC500 AC200MAX, Extra Battery for Home, Emergency, Road Trip

I have been using the Bluetti AC200P for about a year. It’s been faultless in this time and the only thing I wanted was to add additional battery power. Hopefully, this is at least in part resolved by the B300.I connected it to the AC200P through the solar input and a cable that Bluetti provided free of charge. Once you hold the power button down (it did take me a while to work that out!), it charges the AC200P at about 600W. Which is more than enough.I’ve attached some photos (excuse the mess!) and the two units are strapped securely into a “tray” I made for them. I have my AC200P plugged in to a 12V fusebox with the 25a output. This powers my fridge, heater, water pump, lights etc.In an ideal world, I would have the AC200MAX which enables you to treat the AC200 and the additional B300 (or B230) as one battery and will charge with one input and see everything on the display. Unfortunately, with the AC200/P you are a little more limited. But I’ve been happy with my AC200P and didn’t really see the point of upgrading to the MAX just for this convenience.I have it set up in my camper van with as mentioned, everything plugged into the AC200P with all the charging going into the B300 via a fixed solar panel into the B300 DC input and it also charges from the engine via Bluetti’s DC charge enhancer at the same time. Hopefully, this will keep the B300 charged up and the AC200P charged as a result. The only issue with this setup is that you cannot see the solar input going in on the AC200 display. The on-board solar charging is a good reason to go for the B300 over the B230 in my opinion.In my experience, powering everything mentioned above, I use about 900WH a day. This means I should get 5/6 days of completely off-grid power without any solar or charge from the engine in winter.As an additional note, I have heard of many of the first batch of these being damaged by couriers. I am pleased to report that I had no such issue and it all seems to have arrived free from damage.Overall, I’ m pretty happy and it’s doing exactly as described by Bluetti. Giving my 5KWH of battery power. Although it would be nice to have the MAX, the way Bluetti have tried to make it as backwards compatible as possible is appreciated and means I’m more likely to upgrade when the time comes.

The media could not be loaded. Recently bought this Bluetti B300K to exoand my AC200Max. It over doubles the power of the AC200Max. It comes with the cable to connect it. Easy to hook up. The quality of build and materials is great! It charges only through beung plugged into your Bluetti solar generator that you plan to expand the battery power of. Once hooked up, you can charge them with solar panels, plug into an outlet. The B300K comes with only one USB-A type USB input. The power button must be held down for about 3 seconds to turn on. The lights are bright. It has 4 lights to represent the batter power of it. Each representing 20% of the power. And the power button lights up. This battery has a lifecycle of up to 3,500 charges from 0 to 100. After that, the battery will deplete 20%. Meaning you CAN STILL USE IT afte the 3,500 charges. And charge it from 0 to 80% of the battery's power for a long time. The functionality is easy and nice! The B300K weighs around 65lbs. But is easy to move around. The handles are sturdy. You can also see the battery percentage with the Bluetti app. And control several different Bluetti generator models with it.

Had it for six months. No issues.

We trust the Bluetti name for quality and expand ability they offer. Easy to expand, monitor power levels for each unit and recharge with their built in electronics. Multiple boxes can be recharged by plugging in a single plug, what can be easier.

Seems to be a great addition to my system.

I bought this B300K because my electrical needs have begun to strain my AC200Max, which I have had to charge every day. Living in the Desert Southwest, we are approaching more cloudy days, meaning charging the AC200M will be more challenging, and my needs have only increased.I have been a Bluetti fan since my last solar battery, an orange one whose name starts with “J”, failed on so many levels, including two panels that completely stopped working after ONE. YEAR. I had a problem with my AC200M when it first came out; their customer service is exceptional, and the problem resolved (by exchanging the defective unit immediately) without complaint or delay.This B300K is plug-and-play, meaning all I had to do was plug it into my AC200M with the heavy cable provided, and presto, green lights! Because I was already charging, I did not even have to push the START button; it starts immediately when connected to solar. After a couple of days, the power in the two units balanced (automatically) and I no longer have to charge every day; I have much more available power in the setup.I have no reason to buy any solar battery or accessories from any other company. Well done, Bluetti. Very well done.