In a weak moment a few months ago I purchased a used Pilot RC Yak 54, 30% scale with a 55cc DLE engine. This is my first gas powered plane. I just had to try it, and hope to very soon.
The two batteries for the receiver and one for the ignition are all LIFE, 2 cell packs. The original ignition battery would take no charge at all so I replaced it. This new one will charge up to 3.6 Volts per cell and quickly drop back to 3.3V per cell after a few minutes of engine running. So it starts out at 7.2 Volts total and then levels off at 6.6 Volts total. Apparently this is normal.
The 2, 2 cell batteries for the receiver however will not take a proper balance charge. Each battery charging to 3.6V in one cell and only 3.4V in the other for a disappointing total of only 7.0 volts. These two batteries however after some use will also return back to 3.3 Volts per cell. So this part is normal behaviour. How long they will last at this level though, has yet to be determined.
So my question is: Should I be concerned that I can't put a good balance charge into these two receiver batteries? Is this balance charging problem a sign these batteries are failing? Even though one of the batteries is there for redundancy what if they both failed at the same time?
Thank you for your reply, anyone who has experience with LIFE batteries.
The two batteries for the receiver and one for the ignition are all LIFE, 2 cell packs. The original ignition battery would take no charge at all so I replaced it. This new one will charge up to 3.6 Volts per cell and quickly drop back to 3.3V per cell after a few minutes of engine running. So it starts out at 7.2 Volts total and then levels off at 6.6 Volts total. Apparently this is normal.
The 2, 2 cell batteries for the receiver however will not take a proper balance charge. Each battery charging to 3.6V in one cell and only 3.4V in the other for a disappointing total of only 7.0 volts. These two batteries however after some use will also return back to 3.3 Volts per cell. So this part is normal behaviour. How long they will last at this level though, has yet to be determined.
So my question is: Should I be concerned that I can't put a good balance charge into these two receiver batteries? Is this balance charging problem a sign these batteries are failing? Even though one of the batteries is there for redundancy what if they both failed at the same time?
Thank you for your reply, anyone who has experience with LIFE batteries.
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