Posted April 20, 20232 yr comment_4030992 what size battery is everyone using or would recomend for a run of the mill rotary. im finding conflicting info on aprox run times, charge times and weights for all the options. cheers for any advice
April 20, 20232 yr Author comment_4030997 yeah i looked at that but the outside of 2nd hand youre looking at like twice the weight and price of a dedicated battery
April 20, 20232 yr Community Expert comment_4031001 I use the second hand fire alarm/emergency lighting batteries.
April 20, 20232 yr comment_4031027 1 hour ago, Sweet11-87 said: yeah i looked at that but the outside of 2nd hand youre looking at like twice the weight and price of a dedicated battery Won’t run out of juice if it’s on all day though
April 20, 20232 yr comment_4031031 1 hour ago, TIGHTCHOKE said: I use the second hand fire alarm/emergency lighting batteries. +1 think the yin i have came from a security light, alarm set up, cheap and light.
April 20, 20232 yr comment_4031064 If you use 7ah lead acid (fire alarm etc) you can use just 3ah for a session (50% of capacity). A lithium battery at say 3ah will last just as long and be half the weight at twice the price.
April 21, 20232 yr Community Expert comment_4031073 8 hours ago, oowee said: If you use 7ah lead acid (fire alarm etc) you can use just 3ah for a session (50% of capacity). A lithium battery at say 3ah will last just as long and be half the weight at twice the price. Which is why I use the "FREE" batteries from the replacement of old fire alarm/emergency lighting stock.
April 21, 20232 yr comment_4031093 1 hour ago, TIGHTCHOKE said: Which is why I use the "FREE" batteries from the replacement of old fire alarm/emergency lighting stock. Sounds like a good move. I only have lead acid to use its heavy for its output and the terminals are half broken. ?
April 21, 20232 yr comment_4031097 For a while now I've been experimenting with various batteries based purely on weight and secondary, pack size. I normally use second hand motability scooter batteries as these are reasonably sized weigh on average less than 5lbs and a full charge gives depending on usage two days on one of my magnets or 4 days on my flapper. More recently I've purchased the battery below and am still testing it. Its given me around 6 sessions using the flapper. Not all sessions have been a full day. Currently it's running the 12v system on my caravan as I'm away for a week. It's lasted from Monday till last night when with all the lights on and I used the water pump the lights dimmed. I gave it an hour on the built in charger and today its OK. Not checked with a volt meter cos that's at home, but it's in the green on the vans meter. RoyPow Deep Cycle LiFePO4 Battery Pack 12V 6Ah Lithium Iron Phosphate Battery 3500 Cycles Rechargeable FiOS Drop in Replacement of SLA Battery, for RV/Camper, Kid Scooters, Fish Finder https://amzn.eu/d/hfe85xK
April 21, 20232 yr Community Expert comment_4031119 16 hours ago, sam triple said: I just got the cheapest car battery I could buy You lug a car battery to your hide position !
April 21, 20232 yr comment_4031120 14 hours ago, bigroomboy said: 7Ah seems to last a full session for me just fine Yep, same here, I use an alarm battery 7ah and it will run the magnet for a good 6 hours before it starts to slow down, don’t know if you would get any longer from a brand new one as I have never had one.
April 21, 20232 yr comment_4031192 4 hours ago, Old Boggy said: You lug a car battery to your hide position ! Yeah drive up dump off
April 24, 20232 yr comment_4031800 using a decent 22ah lead acid, if you run a home built rotor with a wiper motor i find a 7ah runs out especially when the battery is well used. so planned ahead for long sessions (hopefully on the peas again this year) and even if the battery is half shot it will still give me al good day. hate running out of battery power when the birds start coming. car battery also for when i can drive to the hide.
April 24, 20232 yr comment_4031805 11 minutes ago, stu nesling said: using a decent 22ah lead acid, if you run a home built rotor with a wiper motor i find a 7ah runs out especially when the battery is well used. so planned ahead for long sessions (hopefully on the peas again this year) and even if the battery is half shot it will still give me al good day. hate running out of battery power when the birds start coming. car battery also for when i can drive to the hide. never had any problems with a 7ah battery and that was using it on a home made magnet and a commercially made one. If I think its going to be an all day job I take two battery's
April 24, 20232 yr comment_4031875 or its just my sha**ed out battery lol no more worries now though. safe if i forget to charge it too, stops me swearing at my forgetfullness.
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