What's the recommended recharge current for the AA and AAA? I'm using a lacrosse bc-700 with three possible charge settings: 200mA, 500mA or 700mA . According to the lacrosse manual 200mA is generally suggested, but this is slow, 13 hours for AA. So i...
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For charging AAA cells (with capacity ~800mAh) the default 200mA setting is ideal. It gives roughly 4 hours of charge time. For charging AA cells (with capacity ~2000mAh) you should NOT use 200mA. Using a low charging rate of 0.1C (200mA/2000mAh = 0.1) means the charger may miss the main 'negative delta-V' termination signal. So it will over-charge the batteries until secondary termination signal (either over-voltage or timer expired) is detected. This is bad for battery lifespan in the long run. The optimal charging rate for a smart charger is around 0.2 - 0.33C. That means charging current of 500 to 700mA, which gives 3 to 5 hours of charge time. Some people will tell you charging at 0.1C is the best for battery lifespan. That is a left-over from the old days of dumb chargers, where people just blinding charge at 0.1C for 14 hours, regardless of battery status.
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Battery should be described as 2ah (amp hour) & 4 ah. The 4ah battery will last about twice as long between charges as the 2ah battery. Two 2ah batteries will allow you to keep working while recharging the other battery. However I have one 4ah battery for my pole saw that lasts as long as I do. There are other pages on Amazon that correctly describe the battery as 2ah or 4ah. You may want to order from a vendor that more accurately describes his product (I looked and didn't find a better description that was compatible with the same charger as the one you are considering). Also confirm that the battery that you order is compatible with the charger. I see that there is ample opportunity to get a mismatch.Good luck. See: http://www.amazon.com/Greenworks-29662-40V-Lithium-Ion-Battery/dp/B00KJ65W8K/ref=pd_sbs_lg_31?ie=UTF8&refRID=0QM0C77332G6JXX5PR6T
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I have charged AA and AAA in any combination. However, I usually charge them separately because of different charge rates and amp/hr settings. I usually try to balance the batteries for no perticular reason. For instance, I put two "AA" into the left bay and two in the right bay. I find that the charger will charge them to the same voltage. BTW, I always use my volt meter to make sure that the batteries measures above 1.2 volts. If they are less that 1.2 volts, the charger will not charge them. This is a characteristic any new chargers for NIMHs.
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We are lucky if the rechargeable batteries last 3 hours...so very annoying. I started doing a little research and found that these rechargeable batteries are the best on the market : eneloop AA 1800 cycle, Ni-MH Pre-Charged Rechargeable Batteries, 4 Pack (discontinued by manufacturer) Anyone have any experience with them?! They have really good reviews. I'm wondering if I do get them if I should get a better battery charger, if it really matters at all?!
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I use rechargeable Duracell batteries. The unit comes with two "AA" batteries but because I like to be prepared when I go I purchased a charger with rechargable batteries. The unit last exceptionally long on one charge so I have no complaints
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Hi Krystina, The short answer is the "Discharge/Refresh" mode. Do you have the owner's manual for the BC-700? You didn't mention what size the batteries are. Are they AA, or AAA? What is the voltage reading on the batteries, in their current state? If you are getting voltage readings below .05 volts, you may need to put them in a "dumb charger" for a few minutes to bring them up to a voltage level that the BC-700 can work with. When initially placed in the BC-700, you should get a voltage reading for a few seconds. If the screen reads, "NULL," then you do need to use the "dumb charger" to sort of jump-start the charging process, before the BC-700 can "see" a viable battery. Do I assume correctly that the batteries have not seen their full number of duty cycles? This can be up to 1000 cycles or more, when properly cared for. But if these batteries were at the mercy of a "dumb charger" during their first four years of use, they may have already been sufficiently abused, so as to render them less than fully capable. Dumb chargers are ones that charge for set lengths of time, and usually deal with batteries as pairs, rather than individually. These chargers have no way of gauging a battery's capacity; they stay on for a certain amount of time, whether the battery wants it or not. Overcharging as well as over-using are both detrimental to the battery's health and longevity of service. Get back to me with your answers to the above questions, and we'll procede from there. Hopefully you have the owner's manual. If not, the LaCrosse website may have one for you read and/or printout.
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Hello, I have the Duracell 15 minute charger that charges AA & AAA batteries, and that's the highest powered charger currently available that I know of for Duracell itself. The power output for the 15 minute Duracell charger I have is 1.2 volts for AA & AAA batteries and 8.3 Amps(current) max for AA and 3.5 Amps(current) for AAA, so if your charger outputs more for voltage or current for AA & AAA I would recommend not using it for those type of batteries, and as far as other batteries like C,D,9 Volt, etc. I can't recommend since my charger doesn't charge those types of batteries and only charges AA & AAA. If your batteries fit into your charger and the output power matches or is slightly under my power output then you should be fine, and anything that charges at a higher power output should not be used since Duracell hasn't made batteries and a charger that can handle higher output power charging yet. Good Luck!, bye &#9685; &#9697; &#9685;
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Depends how many AH is the battery. For every AH you need 1 amp so for a 100AH battery theoretically you need 20 hours at 5 amp to fill it up. However that its not always the case. You only put out 5 amps at full blast and not at lower voltages.
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Linsey- this is the best battery Charger for the money - this charger used with 2800 mAh NIMH batteries should give you lots of service and save you a lot of money!Yes - you can charge AA and AAA together so buy both sizes and recharge after every use, this way you can have fresh fully charged batteries every time.
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I use Eneloop rechargeable batteries in mine and swap out with a spare set every month or so to stay ahead of dead batts. It's nice that they run it on 2 AAs - I'm currently using a pair of 550s that use 4 AAA each.
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4 AA's, yes, I use a recharger; I bought it at Harbor freight - model V-1199. Hope that helps.
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The charger can charge either AA or AAA sizes and either in a pair or all 4. I ordered mine with 4 AA, this was my need.. But if I recall you may be able to order either, confirm this... I have since ordered additional batteries just for extra.. The charger itself is good, and charges in typical time - its not a quick or fast charger.. But good for overnight. It comes with other plugs for different countries although I dont forsee a need in my future, but hey... I gave more info than requested in hopes it answers any other or others questions...
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Best to use Duracell (4) AA batteries. They should last 20-24 hours if new. Keep recirculating them as they loose power within the unit for max. use. I always keep an extra set in my carrying case for back-up and change after the ones in my unit are about 1/2 life left. You can use rechargeable but they won't last as long and you need to charge them up before you go out for max. efficiency. Happy Hunting!!!
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The specs are: AC110v-240v 50/60Hz input (international charger, can be used worldwide) Output: DC 4.2V 800mA 18650 3.7v Rechargeable Li-ion Battery Capacity: 2400mAh Voltage: 3.7V Rechargeable times: Up to 1800 times. The information on the battery a chargers follows: 18650 3000mAh 3.7V Rechargeable Li-Ion Battery + Charger Combo by UltraFire 802 customer reviews | 15 answered questions List Price: $34.95 Price: $7.10 You Save: $27.85 (80%) Note: This item may be available at a lower price from other sellers that are not eligible for Amazon Prime. In Stock. Sold by super shop and Fulfilled by Amazon. Gift-wrap available. Want it tomorrow, April 2? Order within 55 mins and choose One-Day Shipping at checkout. Details Li-Ion Rechargeable 18650 with IC Protection (pair) Charges 1 or 2 batteries simultaneously Can be charged over 500 times Holds 85% charge over 12month period Travel charger folds up for easy transport 47 new from $5.70 Hope this helps Mike
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Instructions recommend when charging AAA batteries to use slot 1 and 3 (IE: only 2 at a time. Incidentally, this writer just charged 2 batteries of 3: 700-750 Ma AAA batteries.
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The unit uses 2 six volt 4.5 amp hour recharagable batteries like this one:ExpertPower EXP645 6V 4.5 Amp Rechargeable BatteryThe batteries should last just about forever if you don't let them discharge fully. I think that you can get up to 6 hours use maximum, The longest I ever used mine was 4 hours. Just keep the batteries charges as per the instructions
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That's one downside here. AA's are too small. An alternate is the C123. That will be a pricey alternative because the XMLT6 will gobble them up. Go with the rechargeables.