February 28, 20233 yr I have 8 x AGM batteries connected to a 5.6kva Mecer 5m4 inverter. What will the Max Battery Charging Current. Later I will add another 5.6kva Mecer 5m4 inverter.
February 28, 20233 yr What is the capacity of your batteries? Are they 20C or 10C? What is the connection configuration?
February 28, 20233 yr Author The batteries are 8 x 100ah 12v AGM. They are connected in 2 packs of 4 in series and then parallel to the inverter 48v Edited February 28, 20233 yr by Johan Kotze
March 1, 20233 yr Author Where do I look for the battery capacity. Current setting is 30C Type of Batteries are Vision Agm 100ah 12V Edited March 1, 20233 yr by Johan Kotze
March 1, 20233 yr 12 hours ago, Johan Kotze said: The batteries are 8 x 100ah 12v AGM. They are connected in 2 packs of 4 in series and then parallel to the inverter 48v so 4S2P 200Ah capacity, you should probably not exceed 40A charge/discharge current and better to stick to no more than 20A, really, if you want these to live more than a few months, also, do not discharge them more than absolute maximum of 50% and ideally much less than that... having written this, 20A at 48-odd Volt is 1kW, so, your battery capacity is waaaay too small for the inverter and don't even think of paralleling another one, unless you are planning on multiplying the current battery setup by 10 X or are planning on upgrading to Lithium 10kW battery not too far down the road...
March 1, 20233 yr If this is your battery https://www.sustainable.co.za/products/vision-6fm100z-x-100ah-12v-agm-battery then the max charge current per battery is 30A You have 2 banks of them in parallel, so you can safely charge at 60A. At 50A you would be on the safe side. Suggest you also consider a battery balancer to prolong the life of the batteries https://www.geewiz.co.za/hubble-battery-balancer/185920-lithium-48v-battery-balancer-equaliser-suitable-for-all-battery-types-24v-36v-or-48v.html (suitable for all battery types) Edited March 1, 20233 yr by zsde
March 1, 20233 yr Author @Kalahari Meerkat Yes I will install 2 x 5.1kw lithium batteries in the future. @zsde Thx I will get a Balancer as you suggested.
March 2, 20233 yr Author I see that there is 2 charging settings 1. Max battery charging current 2. Max AC charging current Should I set point 2 to 50A or both
March 3, 20233 yr Author Must I have 2 battery balancers or is 1 enough as I have 8 batteries. Edited March 3, 20233 yr by Johan Kotze
March 3, 20233 yr 13 hours ago, Johan Kotze said: Must I have 2 battery balancers or is 1 enough as I have 8 batteries. You 1st parallel 2 batteries then the series connection. Then only 1 is needed. Refer to the diagram on Thesunpays website for the HA02.
March 3, 20233 yr 13 hours ago, Johan Kotze said: Must I have 2 battery balancers or is 1 enough as I have 8 batteries.
March 9, 20233 yr Author @zsde Geewiz delivered the battery balancer but saw that online link to the product is a HA02. The one that was delivered is a HB02. Are there any differences between the two.
March 9, 20233 yr 56 minutes ago, Johan Kotze said: Are there any differences between the two There may be minor technical component changes. But the HA01, HA02 and HB02 all do exactly the same, keep the batteries balanced. But you can always ask Geewiz for the datasheet for both, if such a datasheet exists as their site uses the same schematics of the HA02 for the HB02 as well. Item Code:GW-A-HB02 https://www.geewiz.co.za/hubble-battery-balancer/185920-lithium-48v-battery-balancer-equaliser-suitable-for-all-battery-types-24v-36v-or-48v.html Edited March 9, 20233 yr by zsde
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