SafeRide 80 Batteries

I'm slowly getting the impression my saferide 80 isn't lasting as long out on rides. It used to be good for a couple of hours on mostly full power
Can anyone recommend the best batteries to install?
Can anyone recommend the best batteries to install?
2020 Reilly Spectre - raw titanium
2020 Merida Reacto Disc Ltd - black on black
2015 CAAD8 105 - very green - stripped to turbo bike
2018 Planet X Exocet 2 - grey
The departed:
2017 Cervelo R3 DI2 - sold
Boardman CX Team - sold
Cannondale Synapse - broken
Cube Streamer - stolen
Boardman Road Comp - stolen
2020 Merida Reacto Disc Ltd - black on black
2015 CAAD8 105 - very green - stripped to turbo bike
2018 Planet X Exocet 2 - grey
The departed:
2017 Cervelo R3 DI2 - sold
Boardman CX Team - sold
Cannondale Synapse - broken
Cube Streamer - stolen
Boardman Road Comp - stolen
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When I first put them in they didn't work at all. Then charged them. Worked fine. I only ever charged them in the light. They did last longer.
https://twitter.com/roubaixcc
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Thanks censored . Thinking about it, when I bought yours for a mate you mentioned you'd swapped out the batteries. Are these the ones you used then?
2020 Merida Reacto Disc Ltd - black on black
2015 CAAD8 105 - very green - stripped to turbo bike
2018 Planet X Exocet 2 - grey
The departed:
2017 Cervelo R3 DI2 - sold
Boardman CX Team - sold
Cannondale Synapse - broken
Cube Streamer - stolen
Boardman Road Comp - stolen
Yep. And should be still inside I think.
https://twitter.com/roubaixcc
Facebook? No. Just say no.
Depending on your usage patterns you might want to look at getting low self-discharge aka 'pre-charged' or 'hybrio' or 'eneloop' batteries such as these:
http://www.amazon.co.uk/AmazonBasics-Capacity-Pre-Charged-Rechargeable-Batteries/dp/B00HZV9TGS/ref=sr_1_6?s=electronics&ie=UTF8&qid=1448462413
These hold their charge better than standard NiMh rechargeables (such as those linked above) so if you're only using the light occasionally they're a better bet.
With that said, at this time of year I'm charging my saferide every other day so there's no benefit to be had there! I'm just glad it has the usb charge socket.