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Thank you very much for this detailed answer. At the end I'll maybe choose something cheaper but that could be the quality/reliability choice. I didn't realise that on aliexpress there could be cells like 3 time cheaper. I gonna research more to find a good balance between...

Hi, I am planning to build soon my first solar system and battery. I would really know more about these GWL/Power because in europe it's a very competitive proposition. https://www.ev-power.eu/Winston-40Ah-200Ah/WB-LYP100AHA-LiFeYPO4-3-2V-100Ah-WIDE.html There comunication is based on qualiy...