fully agree with you, on the points that you raised ...
I did not go into details .. it is actually necessary to start by determining its needs and the geography, in order to best size the battery capacity ...
In terms of engine power, it's true that I looked for 12 V there are none ...
On the bike management side there is the batt man or for purists and who want data from all sides and advanced controls, there is the Cycle analyst ... not the same price but not the same functions or possibilities. ..
Regarding the modeling batteries, (I am 100% ok for the weight and the calculation of Ah
/ Kg, mine is heavy compared to the weight ...) Before buying anything I read a lot (given my geographic configuration the weight was not a big problem for me, D + at least 200 m (and again) above the sea on the biggest of my coasts;)), and what emerged from my reading is that, except for taking very special cells type A123 original (those that doctor bass used for its records that we find necore in some Dewalt drums .... The Ping genre pack is neither more nor less than classic li ion cells, except that before being mounted it is charged controlled and equalized before being tied, and re tested ...
Something in modeling is not necessarily the case, so there may be on some pack weakness of an element, but as the protection is made on a basis of general tension, if a cell is naz, the bms cuts all the battery ... often it is the first cell that muffles ... On the other hand if they are recharged or emptied badly, this can be fatal ... It is therefore necessary to invest in a real charger which optimizes the end of charge, phase critical ...
On cylcurba, the difference between "classic" and high-fly airframe is of course made, and it is true ... it all depends on the price and the utility ...
I did not see at the time a lot of negative feedback, if not too important empties killing the batteries ... or charges causing the fire ... but this is also true for any battery li ion ... on forum American too, model battery users do not complain, well this said I did not set foot on these forum for a year ... things may have changed ... but I know that manufacturers from Zippy participate in forum endless, for example and know full well that their productions are also used in VAE, suddenly there has been progress .... And a production after all harmonized and more efficient ... or / and better controlled ..
But I repeat, I agree 100% that some brands have processes. of manufacturing or superior controls, ultimately giving more finished and robust products ... A123 for example without question .. but it costs more it is clear, but often we also find ourselves in efficiency and longevity .. ..
Everything is a question of budget and personal investment I think ... we must find the right solution that's all.
And for the present case I found that precisely, even if the ground is flat, there is a sleigh pulled, suddenly the pedal motor is practical, due to the speed precisely, if there is heavy to pull ...
after in terms of battery power, a 10 ah or a 15 Ah can be very suitable depending on the use ... If you can recharge like me on arrival, no problem with an 8Ah ... if you have to go back and forth it is not the same ... In short each case is indeed a particular case ... here we are talking about the flat country if I'm not mistaken ...
And well seen the trailer fixing system ... I will resume the thing ... I had in time small trailer hitch balls to mount on moped ... that's better

see you