Sinbord1981 said:
kulmer01 said:
How are your batteries doing? Is Frey using quality cells and chargers?
Sinbord1981 said:
barbarossa said:
always very nice videos !!!! really nice
it could be that newer DPC18 displays include a setting for a 52V battery. but normally the DPC18 calculates discharge capacity based on voltage of a 48V battery. fuel gauge and percentage level won't be accurate at all. this means 43% on a 52V battery might be only 10-20% discharge capacity left - about 44-46 volts i guess - almost empty. using a 52V battery i highly recommend to switch to voltage mode not percentage mode using a DPC18 - being able to estimate your remaining discharge capacity. a better way is either a smart bms (eg neptune15) or another display (eg eggrider) which can handle 52V battery discharge capacity.
Cheers Barbarossa. Yeah it’s all an approximation really and changes in real time depending on how hard you’re riding it and what mode your in. All I know is that I can squeeze out almost 70 miles on mine in the road in Eco 1 or I can put it in Sport 5 off-road and do the battery in an hour and 20 miles. It is a nice high capacity battery and just takes a bit of managing depending on what ride you’re about to do. The Frey batteries do seem pretty good though and I’m happy with both of mine.
Cheers Sinbord1981
yes, of course these things are never 100% exact but in the case of 52V it is not exact at all :wink:
i can only talk about the Frey AM1000.
battery:
Reention Dorado Max, 505mm , 80 cells maximum. 52V = 14s/5p = 70 cells or 48V = 13s/6p = 78 cells. cells are Samsung 35E = 3500mAh/2.65V low/8A cont or LG MJ1 = 3500mAh/2.5V low/10A cont (newer batteries with Samsung cells). in reality the Samsung also does 10A without immediate overheating. type of cell is decoded printed on battery i think, attached fotos, L35=LG, S35=Samsung. cells never got really hot - even not at 45A cont (i have the 48V LG-cell version)
bms:
no rocket science but a good standard bms. 30A rated, but also does appr. 50A peak and around 45A cont (my own test results, somewhere over 50A it cuts off). cells are well balanced.
charger:
the charger is ok for me. to be honest i use it for all my batteries. one of the potentiometers changes voltage (but of course you have to open it) so you can use it eg for 54.6v and 58.8v (48V and 52V batteries, and even higher voltages). i think this is the "Chinese standard model" - sold at many voltage/ampere levels - just with different pot settings. so hey i am flexible testing packs with different voltages. it charges with 5A (exactly measured mine was 4.78A using 54.4V charging voltage charging my 48V battery) so it is also fast. fan is a little noisy but it is ok.
connection cables frame/battery:
seems to be AWG12, which is absolutely ok i think
all in all battery and charger work well, nice built, nice quality cells, never had any problems...