Search found 10 matches

by jumpjack
Fri May 30, 2014 7:48 am
Forum: All things battery related
Topic: Super capacitors anyone?
Replies: 6
Views: 17824

Re: Super capacitors anyone?

I received 20 supercaps for free from Maxwell some months ago. They still lay in my drawer, unused. :-( What I miss/need is a powerful buck/boost DC/DC converter! Without it, SCs have no use on an electric vehicle! Indeed, a SC can be discharge down to 0V, so you can use almost 100% of its energy......
by jumpjack
Fri May 30, 2014 7:42 am
Forum: All things battery related
Topic: "UltraBattery" Lead-Acid Supercap Hybrid Battery Class
Replies: 2
Views: 13284

Re: "UltraBattery" Lead-Acid Supercap Hybrid Battery Class

Are they available for purchase?
Where?
At which cost?

Would they perform better than lead-crystal batteries or TPPL (Tin Plates Pure Lead) batteries?
by jumpjack
Fri May 30, 2014 7:24 am
Forum: All things battery related
Topic: Direct lead battery replacement by LiFePO4
Replies: 1
Views: 11630

Direct lead battery replacement by LiFePO4

I read on datasheets of some 12v LiFePO4 packs that no more than 4 of them can be connected in series "due to internal circuitry limitations". Does anybody know why this happens? And why do not all of the 12v-lithium-packs manufacturer write this in the datasheet? Missing this info, how ca...
by jumpjack
Fri May 30, 2014 7:22 am
Forum: All things battery related
Topic: LiFePO4 cells & packs sold in Europe?
Replies: 0
Views: 11467

LiFePO4 cells & packs sold in Europe?

Which is your favourite European dealer for LiFePO4 cells, packs, BMSs and whatever? I only know EclipseBikes and LipoPower. :-(
by jumpjack
Fri May 30, 2014 7:21 am
Forum: All things battery related
Topic: Mobility scooter
Replies: 5
Views: 15198

Re: Mobility scooter

I read on datasheets of some 12v LiFePO4 packs that no more than 4 of them can be connected in series "due to internal circuitry limitations". Does anybody know why this happens? And why do not all of the 12v-lithium-packs manufacturer write this in the datasheet? Missing this info, how ca...
by jumpjack
Sat Apr 19, 2014 2:19 pm
Forum: All things battery related
Topic: Need to make an adapter for type 2 to caravan type 16A?
Replies: 12
Views: 21535

Re: Need to make an adapter for type 2 to caravan type 16A?

I need to pull just 0.5 kW from an european EVSE equipped with Mennekes outlet; any tip about where to find schematic of circuitry I must add to an empty 3d-printed mennekes VDE plug to enanle EVSE to provide current?
by jumpjack
Fri Nov 22, 2013 9:11 am
Forum: All things battery related
Topic: Mitsubishi, Peugeot and Citroen batteries
Replies: 1
Views: 5280

Mitsubishi, Peugeot and Citroen batteries

Do all i-Miev clones mount same batteries?
And which are original Mitsubishi batteries? Any full datasheet available? Life expectancy? At which C rate?
by jumpjack
Thu Nov 21, 2013 7:50 pm
Forum: All things battery related
Topic: discharge battery
Replies: 6
Views: 8061

Re: discharge battery

If you have a 10ah cell its pointless having a 1ah bms or a 100ah bms. Some do measure current and so this matching of the cell to the BMS is important, some merely monitor voltage and so are less critical. BMS works on A, not Ah. The design sequence is: - chose the power of the motor (e.g. 2000W) ...
by jumpjack
Thu Nov 21, 2013 3:19 pm
Forum: All things battery related
Topic: Nickel Zinc on the Oxygen Cargo Scooter
Replies: 27
Views: 31154

Re: Nickel Zinc on the Oxygen Cargo Scooter

What is the current status of your Lepton conversions to lithium?
Please share! :D
by jumpjack
Thu Nov 21, 2013 3:18 pm
Forum: All things battery related
Topic: discharge battery
Replies: 6
Views: 8061

Re: discharge battery

hello !! i have several qustions about battery discharge: 1) if the battery is 5000mah and have a discharge rate of 3c then the corrent is 15 A, but what happen if the motor consumed only 10 A current ? Is the engine overheats ?, and how this affect the battery ? No, the motore "decide" h...

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