Help with BP Polar charger please?

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This topic contains 10 replies, has 3 voices, and was last updated by  andyfras 20 hours, 54 minutes ago.

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  • #44217

    reboot
    Participant

    Does anyone know if the home charger needs to receive a mobile signal to operate?
    My charger hasn’t worked.for ages and “check connections” keeps coming up,also the key does nothing,The amber light finally settles.Thanks.

    #44224

    Trevor Larkum
    Keymaster

    What make and model is the charge point?

    #44260

    reboot
    Participant

    BP Polar, White 2013,eliptical.
    Would appreciate car charging plug contact details, what does the little red wire require? Thanks, posted in the wrong forum earlier.

    #44264

    andyfras
    Participant

    The caharger does not need a mobile signal to work.

    I have mended several of these units, and I’ve tested with the SIM card removed in the hope of a quicker boot (nothing changed).

    The little red wire connects to CP (Control Pilot) and is the communication with the car. Charging will not start if this wire is not connected.

    #44269

    andyfras
    Participant

    If your charger dates back to 2013, it will need some maintenance, as I have found several design issues and component ageing failures. I’d be happy to repair it for you.

    There’s long thread on Speak EV where I have shown all my repairs and modifications to these chargers.

    https://www.speakev.com/threads/chargemaster-polar-home-charger-issues.50625/

    #44274

    reboot
    Participant

    Good to hear from you back in this place. Your granny charger is the only reliable one out of three that I have.
    Before tackling relays and caps as I’ve posted before, living in rural N. Ireland, brings with it earthing problems which I believe will never change. Recently I’ve been in discussions with NIE,(Now, ESB) regarding these issues. They came out to the property and worked for many hour with JCBs digging in fields in the dark.
    Bottom lines is that historically,ie. Before EVs they are happy with a reading of 200 ohms impedence, in my case the reading was 500.Ive read that anything above 100 is “Unstable”, and Zoe is unhappy above 140 ish? The 200 figure will not change, the engineers parting comment was, “You bought the wrong car”.
    I also have difficulties with the Rolac charger, which has an absence of electronics compared to the Polar, and I’m wondering what a basic box with RCD and red wire would consist of? Thanks again for your input.

    #44277

    andyfras
    Participant

    There’s a bit more to the Rolec than that. All the clever stuff is in one clip-in unit, similar to the Viridian module (AKA Mainpine).

    #44278

    reboot
    Participant

    I appreciate that, would that, or similar unit be worth buying as it takes care of the “little red wire”?, which is obviously not just sending a simple small voltage. I assume the resistor you mention is dropping voltage, not limiting current or it would have to be large wattage? Trevor, what ever happened to the reassuring “Howdy Reeboot”?

    #44281

    andyfras
    Participant

    The resistor value is just sensed by the car (and charger in untethered version) in order to determine the cable’s current carrying capacity; it does not carry any charging current, so it is only a 1/4 Watt type.

    The resistor is physically located in the cable’s plug and socket (one at each end) between the PP pin and ground.

    1500 ohms is 13A
    680 ohm is 20A
    220 ohms is 32A
    100 ohms is 63A
    50 ohms is 80A

    #44282

    reboot
    Participant

    The Internet is a wonderful thing, Viridian main pipe is a bottle of vultivitamin, but no red wire.
    I’m aware of the mains connected pins on the plug but not the rest. Getting closer however with your useful info on resistors.Guess the pulse would originate in the Viridian?
    You mention PV, and I gave up thinking about supplying Zoe when I read it will only accepted 10 amps minimum current input before charging and I assume an inverter would be involved. Economy 7 cheap overnight rate seemed less hadtle at 8p per unit. Even if the Polar had an mot, couldn’t guarantee an earth impedence below 200 ohms, a rock and a hard place? Thanks.

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