EUCMania Posted November 9, 2017 Share Posted November 9, 2017 I have 3 and expecting 4 EUCs and an electric bike. My first EUC, a NB1e+, is about 2 years old. For safety, it is better to replace battery packs before they are unable to provide enough power, sending me to hospital. So, within 1 or 2 years, I will have to replace battery packs. I am thinking my options: Option 1. Sell old EUCs, if there are buyers, and buy new EUCs. Option 2. Buy new packs. Option 3. Build the battery pack, using existing BMS. Pro and Cons or these Options: Option 2. Expensive. Option 1. Sell old EUCs without a new battery is hard. So this is essentially the same as option 1 or option 3 in cost. Option 3. Build the battery pack, using existing BMS. This requires to buy a spot welder,and some supplies, costing $300 to start with. Good battery cells, eg Sony, Samsung, LG, Panasonic cells, in US cost about $4+/each. Aliexpress vendors can sell them for about $2 in large quantity. I do not know these vendors reputations though. Savings = costOfBuy - costOfBuild Nb1e+: $300 - 30*4 = 180 KS 16: 500 - 16*4*4 = 244 GW msuper: 500 - 16*4*4= 244 electric bike: 500 - 60*4 =260 -300 equipment cost. total saving = 620 + the battery cells are fresher. If I can get battery cells at $3/each, then I will save 620+218 = 838. Please provide your opinion. Link to comment Share on other sites More sharing options...
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