Dead Anker E1 5200

#1

Hi there

I went to use my Anker E1 5200 powerpack and it was dead, just a single blue LED so left it on charge overnight and still just the single LED. Tried the reset with the cable and all the obvious like other cables and chargers but nothing. It is out of warranty but has had very little use. My other Anka product is an A1109 which is the same age and had even less use but is fine. Is there any known issues with the E1?

I will say that I am not using it as a charger for other products but as a power source for a Ublox GPS receiver and bluetooth transmitter that draws a total of 165mA, the A1109 being circular did not fit in the enclosure but the E1 being flat did. Having worked with batteries and chargers in the past I did wonder if the Anka products expect to see a certain load or V, I characteristics during use, ie as the other battery charges up and or they use constant current / constant voltage charging algorithms to inteligently charge another battery whereas my load is constant give or take a few mA.

I am buying a new one but with 6700 mAh capacity rather than the 5200 mAh capacity although it is not required but hoping for improved / different batteries.

Does anyone have any thoughts or similar experiences and could this just be a chemical issue where the batteries have given up through lack of use?

                                                        thanks Roy
#2

Please try another wall charger and Micro USB cable to see if it helps at all.

For best battery performance, we suggest to fully use up and recharge the battery at least every 3-4 months. It’s best to keep it recharged when it is not being used.

#3

Hi there

I think this is the issue, the batteries have died due to chemical degration. I had not taken into account the internal self discharge and hence the problem. Just as a suggestion have you thought of say just randomly flashing the LEDS when the power level gets very low, this way if it was left in a open location you would notice the LEDs flashing oddly and put it on charge. I have now got my new one and will keep it charged to prevent any reoccurence. Are the batteries different in the A1109 as they were left unused for much longer and there has been no issues?

                      thanks Roy
#4

Hi, aging is worse if battery kept other than room temperature, if it’s either not used for long periods, months, or all cells have an order of 500 recharge cycle capacity.