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#11
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LifePO4 batteries for motorgliders - are we there yet?
Dan,
English not my mother language, sorry. I occasionally charge my LiFePo4 with a "smart programmable charger" type iMAX B6. Easy to find online for 25USD. It requires a power input, and a Pb battery is very well suited for that. This way, I need not remove the LifePo4 from the battery tray, nor do I have to bring mains power to the glider. Alternatively, the iMax b6AC can be fed both by mains, and by other batteries, and comes at about 40 USD. The battery type is: http://www.aeroakku.com/product_info...12-20-NOP.html As you can see, they state it's a "direct replacement" for a Pb. I can tell you, with the iMAX I can get it charged a little more (or "significantly" more, depending on interpretation). The sailplane also has a solar panel and regulator. I usually select the avionics batteries for the panels, but occasionally select engine battery and this also allows a decent charge to the LifePo4. regards, aldo |
#13
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LifePO4 batteries for motorgliders - are we there yet?
On Friday, January 8, 2016 at 2:17:40 PM UTC-5, Benedict Smith wrote:
At 15:00 08 January 2016, wrote: Dan, English not my mother language, sorry. I occasionally charge my LiFePo4 with a "smart programmable charger" type iMAX B6. Easy to find online for 25USD. It requires a power input, and a Pb battery is very well suited for that. This way, I need not remove the LifePo4 from the battery tray, nor do I have to bring mains power to the glider. Alternatively, the iMax b6AC can be fed both by mains, and by other batteries, and comes at about 40 USD. The battery type is: http://www.aeroakku.com/product_info..._AEROAKKU-LFP- 12-20-NOP.html As you can see, they state it's a "direct replacement" for a Pb. I can tell you, with the iMAX I can get it charged a little more (or "significantly" more, depending on interpretation). The sailplane also has a solar panel and regulator. I usually select the avionics batteries for the panels, but occasionally select engine battery and this also allows a decent charge to the LifePo4. regards, aldo Aldo I am familiar with the iMax b6 charger, it is widely used by RC enthusiasts for charging all types of battery packs, it worries me that you are using a LiFePo4 pack that does not have a protection circuit built in, I understand how you are using a PB battery to power the charger, but unless you have BOTH charge and discharge protection circuits built into your glider that are tailored to the correct battery type you are running a risk of thermal runaway and fire! Lithium batteries of any type are not to be trifled with as more than one RC racer has found out. LiFE is a whole different animal than LiPO..... trust me, I'm an electric RC'er as well..... Granted, the charge/discharge/LVC (LVC = Low Voltage Cutoff)circuits should be tailored to the specific battery chemistry you're using. 1-Helps prolong the life of the battery. 2-Helps limit fire issues. |
#14
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LifePO4 batteries for motorgliders - are we there yet?
I looked up the charger. Very interesting. Thanks for the reply.
Dan On 1/8/2016 8:00 AM, wrote: Dan, English not my mother language, sorry. I occasionally charge my LiFePo4 with a "smart programmable charger" type iMAX B6. Easy to find online for 25USD. It requires a power input, and a Pb battery is very well suited for that. This way, I need not remove the LifePo4 from the battery tray, nor do I have to bring mains power to the glider. Alternatively, the iMax b6AC can be fed both by mains, and by other batteries, and comes at about 40 USD. The battery type is: http://www.aeroakku.com/product_info...12-20-NOP.html As you can see, they state it's a "direct replacement" for a Pb. I can tell you, with the iMAX I can get it charged a little more (or "significantly" more, depending on interpretation). The sailplane also has a solar panel and regulator. I usually select the avionics batteries for the panels, but occasionally select engine battery and this also allows a decent charge to the LifePo4. regards, aldo -- Dan, 5J |
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