Reserve battery power

[10JP]

Hi, has anyone ever fitted a second battery as a reserve for longer journeys, say a 5ah with a changeover switch?

 

[anotherkiwi]

I just carry it in the pannier. Unplug XT60, replug XT60 no need for a switch.

 

[10JP]

Good idea but the battery weighs over 3kg and when I put the panniers on for long coast to coast journeys the total weight is too much, I am looking for a smaller lighter battery as a spare but don't think it would fit the mount hence the switch.

 

[Deleted member 4366]

You could use 10S lipos (pair of 5S), but you need a lipo charger and a pair of lipo alarms. plus the knowledge of how to use them properly.

to use them, you'd need to vut the main battery wires and put a pair of connectors on. then, when you want to use your reserve battery, you can unplug your normal battery and plug in your reserve, which would have the same connector as the main battery.

https://hobbyking.com/en_us/turnigy-3000mah-5s-20c-lipo-pack.html

https://hobbyking.com/en_us/hxt4mm-battery-harness-14awg-for-2-packs-in-series.html

https://hobbyking.com/en_us/hobbykingtm-cell-checker-with-low-voltage-alarm-2s-8s.html

https://hobbyking.com/en_us/imax-b6ac-v2-professional-balance-charger-discharger.html

 

[anotherkiwi]

If you want to do LiPo I have a spare 80 W charger for sale for 15 € (27 € new) + postage. You will need an 80-100 W power supply, the same as the ones used with laptop computers. I will add an XT60 to solder on to your power supply lead.

Looks like this one https://hobbyking.com/en_us/turnigy-neutron-200w-dc-touch-screen-balance-charger-lihv-capable.html

As new with all cables, box and instructions. 80 W will charge a 6.6 Ah pack at 1C in an hour and it is compatible with the new LihV batteries.

 

[10JP]

You could use 10S lipos (pair of 5S), but you need a lipo charger and a pair of lipo alarms. plus the knowledge of how to use them properly.

to use them, you'd need to vut the main battery wires and put a pair of connectors on. then, when you want to use your reserve battery, you can unplug your normal battery and plug in your reserve, which would have the same connector as the main battery.

https://hobbyking.com/en_us/turnigy-3000mah-5s-20c-lipo-pack.html

https://hobbyking.com/en_us/hxt4mm-battery-harness-14awg-for-2-packs-in-series.html

https://hobbyking.com/en_us/hobbykingtm-cell-checker-with-low-voltage-alarm-2s-8s.html

https://hobbyking.com/en_us/imax-b6ac-v2-professional-balance-charger-discharger.html

Thanks for the info, will look into it

 

[10JP]

If you want to do LiPo I have a spare 80 W charger for sale for 15 € (27 € new) + postage. You will need an 80-100 W power supply, the same as the ones used with laptop computers. I will add an XT60 to solder on to your power supply lead.

Looks like this one https://hobbyking.com/en_us/turnigy-neutron-200w-dc-touch-screen-balance-charger-lihv-capable.html

As new with all cables, box and instructions. 80 W will charge a 6.6 Ah pack at 1C in an hour and it is compatible with the new LihV batteries.

Thanks for the offer, I am going to look at all possibility's first but I will bear it in mind

 

[Beach Thorncombe]

10JP said,




A neat little aluminium rack connected to the seat post upright can take up to 10kg so that could act as a modest, lightweight, platform to temporarily locate a spare battery pack ... or anything else.

Every machine I ever aquire gets one by default.


http://www.ebay.co.uk/itm/381578921269?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

 

[10JP]

10JP said,

View attachment 17102


A neat little aluminium rack connected to the seat post upright can take up to 10kg so that could act as a modest, lightweight, platform to temporarily locate a spare battery pack ... or anything else.

Every machine I ever aquire gets one by default.

View attachment 17101
http://www.ebay.co.uk/itm/381578921269?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

Great idea thanks, Looking to source a small Li-ion battery from China now!

 

[awol]

Great idea thanks, Looking to source a small Li-ion battery from China now!

You don't need China to get a battery made, if you don't fancy the rc-lipo route then give Jimmy a call at Insat, he gets highly regarded on this forum.
http://www.bga-reworking.co.uk/

 

[10JP]

You don't need China to get a battery made, if you don't fancy the rc-lipo route then give Jimmy a call at Insat, he gets highly regarded on this forum.
http://www.bga-reworking.co.uk/

Thats great thanks, will check it out