Poseidon 1228 Wh is overall very good. This is originally a Chinese product Sugineo P1000 under the brand Alzapower. It offers very high capacity, performance and charging speed.
Compared to our competitive competition, EcoFlow River Pro, which costs the same, offers Poseidon 1.7 times the capacity in Wh. But it has a worse Wh ratio per 1 kg of weight, 77.3 Wh / kg for Poseidon and 94.7 Wh / kg for River Pro. This is due to a different LiFePO4 battery technology for Poseidon, Li-Ion for River Pro. The advantage of LiFePO4 technology is a much higher number of cycles before the battery capacity drops to 80%. Specifically 2000 cycles for Poseidon, 800 cycles for River Pro.
The station charges at 1000 W when charging from the outlet, which is very fast, but it starts a very loud fan so that the battery cools down during such an intense charging. Here I see a big disadvantage compared to River Pro, which allows the smartphone application to reduce the charging speed. Poseidon has neither an app nor a button to change the charging speed. Being able to reduce the charging speed would be appropriate not only due to noise, but also due to less battery wear. I haven' t noticed any problems with the operation yet.
As I have already written, this is a rebranded Sugineo P1000 product, but what you should be careful about is that unlike this Chinese version in Poseidon from Alza, there is no cable for charging the station from the 12V car socket or a manual in the package. I solved it with the support of Alza and it is an intention, such an investigation on the cable at the device for 19 thousand really surprised me unpleasantly. And it would be nice to have the contents of the package described on the product page or at least in the manual, as usual. Otherwise, the station is the same in everything but its appearance, and purely subjectively, I like the color design from Alza more than the original. The station does not look like the pictures in the product, the plastic is actually much darker and has a fine texture on the surface. In addition to the manual, which is only available here in PDF. It states that the XT60 solar input is 12-30V / 7A and the DC 5521 is 12-30V / 7A. However, the label of the product itself says: MPPT Solar Input: 12V-28.5V / 10.0A and DC Input: 12V-28.5V / 7.0A. So the values are quite different, but again I communicated with Alza and the manual contains incorrect information and the data from the label is valid and the manual is said to be corrected.
I tried to charge the station using the EcoFlow 110 W solar panel, but even in direct sunlight, it only supplied something between 60-65 W to the station, so the station would be fully charged in 20 hours. In comments here on the Alza product, she announced that a new 200 W panel suitable for this station would be available in April 2022, which will hopefully be a much better choice.