ERider moped Help

[billyboya]

I dont thjink theres a right or wrong(unless informed otherwise by more experienced chargers) but I also wait till about 1/2 full or about 2 bars/30miles, but if its a longer trip or I knowo its going to be hilly ro suspect the wind is going to be strong and I'm going to be riding into it, I'll charge it to max no matter what its at even if at 4 bars and the range has dropped for example from 65miles to 55 miles.

so if its just short trips don't bother charging until its half way, then say if you know you going on a long trip then charge up to max

 

[sjpt]

So you wont bother charging battery until its half way used then, as On my electric bike I charged it everytime I used it. even if it was just a short trip, maybe that's wrong then

There are many different opinions on charging. There seem to a a few rules almost everyone agrees to.

• Don't leave a battery at 100% charge over a significant period (?> 1 week, ? > 1 month)
• Don't leave a battery at below about 50% charge over a significant period
  and in particular don't let it fully discharge.

There is much less agreement on other details.

• Some say don't charge the bike to quite the full 100%
• except maybe sometimes to ensure the battery balances.
• Some say don't recharge until necessary (battery down to maybe 25%)

My feeling on these extra suggestions is that they don't make a huge difference, and that it is best just to use a charging pattern suitable to your pattern of use of the bike. (As AndyBike said in different words above)

Predictability is one important detail. A commuter knows in advance very closely how much he/she will ride. A retired person or couple (us) are much more likely suddenly to decide to take quite a long ride because the weather is good, so in a spell of good weather we tend to charge the bike sooner that we would normally.

 

[wheeliepete]

A quick question I need to ask say like you only do a short journey like maybe just 3 mile round trip do you need to keep putting battery on charge

As said, no need to charge after a short ride every time, you have a large capacity battery, but your bike will obviously use more power than a normal ebike due to weight and only running on throttle. I would go on 2 or 3 short rides of say 3-4 miles without charging, noting your combined mileage, then rest the battery for 30 mins, then take a voltage reading. This will help you judge your power consumption. Recharge when your down to around 47v.

 

[billyboya]

As said, no need to charge after a short ride every time, you have a large capacity battery, but your bike will obviously use more power than a normal ebike due to weight and only running on throttle. I would go on 2 or 3 short rides of say 3-4 miles without charging, noting your combined mileage, then rest the battery for 30 mins, then take a voltage reading. This will help you judge your power consumption. Recharge when your down to around 47v.

Ok thanks I will do


Btw did you read all this bit as Im not sure I have ordered correct lead



On another note this deans connector I have ordered from ebay to join onto the deans connector on battery

https://www.ebay.co.uk/itm/221063445166

it says

Deans lead male plug (Charger side) 100mm (4") Lead made from high temperature silicon 14awg

I need it for discharge side not charger side so have I ordered wrong

 

[Nealh]

Like I was told obviously cow boys. But where can you see solder in that image Nealh

Tbh, I can't though logic though says under the shrink wrap the supply wires are attached some how and soldering would be most likely.

 

[billyboya]

At last the connector has arrived for the Jack plug charging lead what Nealh said and don't require soldering

https://www.ebay.co.uk/itm/143991818437

I wont be needing the female part only male

Also as well the deans male connector has arrived too for discharge side

https://www.ebay.co.uk/itm/221063445166

so once I have connected those the moped will be good to go, but I am not trying it out today as got more things to do.

But when I Do it will be just very short trips to see if moped dont cut out it shouldn't do now I have a better battery. once I have gone around the block a few times, and its ok then can try it further.

Im a bit like a kid at xmas now after waiting 9 weeks for the new battery. LOL Nice to feel young. so soon as Im confident moped is fine I am going to sell my electric bike.

I just like to say a massive thanks to all who have helped me here. you all also helped me when I 1st got electric bike, which had 2 x 12V lead acid batteries and you all helped me change it to a 24V 16aH lithium one. its done me well now for 5 years. 2016 I fitted that to electric bike

 

[billyboya]

Ok its all done and ready to go, tomorrow. I have put charger on battery just so I can say its fully charged, its been on 30 mins so far and red charge light is still on I did take a meter reading whilst I had charger on it said 48.5V is this correct and how far will it go to say fully charged when charge light go green

 

[Nealh]

54.6v is fully charged for 48v/13s.
Those dc plugs with the screw feature makes voltage measuring so much easier at the charge plug.

 

[Nealh]

Nearly there now and ready soon for the big test.
Once all done and dusted if you sell it at least all the charging and discharging will be simple for anyone else to follow.
Good job.

 

[billyboya]

54.6v is fully charged for 48v/13s.
Those dc plugs with the screw feature makes voltage measuring so much easier at the charge plug.

oh so it has to reach 54.6V from 48.5V thanks for that yes that screwed jack plug makes it easier to check voltage. I just like to say its fully charged before I try out moped. its been on an hour so far so at least now I can check it out.

btw whats 48v/13s I know 48 is the v but whats that 13s

Charger must be working as its now 49.3v from 48.5v

 

[Nealh]

13s is 13 groups of cells in series to make 48v nominal.

36v is 10s , 24v is 7s.

Each cell group is a 1s and 3.6/3.7v nominal , as one strings/connects more 1s cell groups together then the voltage increases.
For 36v one connects ten 1s groups together for a nominal 36v battery to increase that to 48v one has connect three more 1s groups for thirteen.

The next step us is 52v which is 14s.

 

[sjpt]

13s means there are 13 cells in series to make up the 48v.
Each cell is around 3.7v, so 13 in series make 3.7*13 = 48.1v.

There will also be many in parallel to provide more current.

 

[Nealh]

Your 30ah battery pack will take some 6 - 6.5hrs to charge fully from 48.5v which is approx. 60%, it may take 7 hrs to fully balance with a 2a charge.

A full charge from empty will be 15hrs approx.

 

[billyboya]

Your 30ah battery pack will take some 6 - 6.5hrs to charge fully from 48.5v which is approx. 60%, it may take 7 hrs to fully balance with a 2a charge.

A full charge from empty will be 15hrs approx.

Well all a learning curve. I think battery is now 51.1v. That’s from 48.5. That’s taken 3 hours so that’s at 18.30pm. So hopefully by 21.30 that’s 6 hours or maybe 22.00. If not leave it on over night or maybe start it again in the morning. But will it do harm if you leave charger on all night

 

[Nealh]

No don't leave it on overnight.
48.5v was 3.73v per cell.
51.1 is 3.93v per cell so rising nicely.

54v is a tad over 4.15v so should be pretty well in balance, the final balance to full at 54.6 could take an hour.

Don't forget this is a large 30ah capacity or a 1440wh nominal battery, at full charge it will hold 1630 wh.

 

[billyboya]

No don't leave it on overnight.
48.5v was 3.73v per cell.
51.1 is 3.93v per cell so rising nicely.

54v is a tad over 4.15v so should be pretty well in balance, the final balance to full at 54.6 could take an hour.

Don't forget this is a large 30ah capacity or a 1440wh nominal battery, at full charge it will hold 1630 wh.

Ok won’t leave it running overnight. I had been wondering if I could use old battery for a light in my cupboard. As it’s a pity to dump it when it’s fully charged. But what type of bulb and wires would I need from the discharge wires

 

[Nealh]

House lighting uses 1.5mm twin & earth coper core flex. 16 or 18 awg should do the job.

 

[billyboya]

How lighting uses 1.5mm twin & earth coper core flex. 16 or 18 awg should do the job.

but what type of bulb to use or what it can cope with

 

[Nealh]

2x MES E10 Miniature Lamp Light Bulb Holder White For Miniature Eddison Lamps | eBay
48V 2W 105MA E10 Light Bulb 10X28mm (Pack of 5) | eBay

6- 60v ebike light ?

 

[billyboya]

2x MES E10 Miniature Lamp Light Bulb Holder White For Miniature Eddison Lamps | eBay
48V 2W 105MA E10 Light Bulb 10X28mm (Pack of 5) | eBay

6- 60v ebike light ?

ok thanks btw battery fully charged at 54.3v green light came on so all good to go tomorrow I am just doing a few short runs near my home just in case. Something go wrong shouldn’t do now I have better battery and it’s not now as old one was being charged through discharge port