David,
Lee sent me also a direct mail and there is a difference - he
indicated that relay 1 needs *TWO* small "NO" contacts, because indeed
with only 1 contact the relay 2 will keep its own coil powered from
the battery via its own contact.
So, the mail from Lee indicates that relay coil 2 gets
On Sun, Mar 20, 2022 at 3:34 PM EV List Lackey via EV wrote:
>
> It sounds like your charger has an electrolytic capacitor across its output.
>
> Could you add a precharging circuit across the contactor?
I thought of this but wanted something as simple as possible. Of
course, a diode has heat
Bill, the OP said there is a significant spark when reconnecting the
pack to the charger, that is the reason he wants to leave the charger
connected to the pack at all times.
The proposed diode is to avoid the charger draining the pack when it
is not powered.
Best I can come up with is to keep
David,
On the contrary - when the charger is UNplugged, it is draining the
battery, so my question is meant to tell: what if you DON'T unplug it?
If it only drains the pack when it loses power, would there still be a
problem when you make it NOT lose power?
Cor.
On Mon, Mar 21, 2022 at 1:54 AM EV
Mount a five (5) pin male connector ("inlet") on the side of the golf
cart for the 120 VAC cord.
Connect the 120 VAC hot, neutral, and ground using three (3) of the
pins, A, B, C, in both the golf cart and the cord portions of the connector.
In the golf cart, use the two (2) remaining pins,
On 20 Mar 2022 at 21:31, Cor van de Water via EV wrote:
> Why are you unplugging the charger?
> Typical Li-Ion chargers or BMS will shut off the power into the
> battery when max level is reached.
Not to speak for Mr Nelso, and maybe I'm minunderstanding or misinterpreting
him, but but here is
David,
Why are you unplugging the charger?
Typical Li-Ion chargers or BMS will shut off the power into the
battery when max level is reached.
Cor.
On Sun, Mar 20, 2022 at 1:52 PM David Nelson via EV wrote:
>
> Hi,
>
> I'm replacing the T-875 battery pack in a golf cart with a 48V Dakota
>
The charger won't know about the voltage drop, it would just reduce the
CV voltage by 0.7V or so
The bigger problem is the charger may not start, if there's no voltage
present on it's output.
On 21/03/2022 8:11 am, Alan Arrison via EV wrote:
Wouldn't the voltage drop confuse the charger,
Wouldn't the voltage drop confuse the charger, especially when it gets
to the constant voltage point near end of charge?
Al
On 3/20/2022 4:52 PM, David Nelson via EV wrote:
Hi,
I'm replacing the T-875 battery pack in a golf cart with a 48V Dakota
Lithium LiFePO4 battery. I also ordered their
On 20 Mar 2022 at 13:52, David Nelson via EV wrote:
> I first thought that I could install a NO relay with an AC coil which
> would close when the AC cord was plugged in and so ordered one. Then I
> thought I better see if there is any arcing when connecting the
> charger to the battery pack.
Hi,
I'm replacing the T-875 battery pack in a golf cart with a 48V Dakota
Lithium LiFePO4 battery. I also ordered their 15A charger to make sure
it would play nice with the builtin BMS. I was very frustrated and
disappointed to discover that this charger puts a continuous 0.12A
drain on the
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