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==NiMH Battery Chargers== | ==NiMH Battery Chargers== | ||
When shopping for nickel-metal hydride (NiMH) chargers it is important to find a charger that will do three things: 1. Charge the cells independently instead of in pairs (this is important in case one battery is bad, which happens frequently), 2. Charge at an appropriate rate --taking at least 1-2 hours (no 15-minute fast chargers!), and 3. Correctly stop charging when the battery is full (rather than charge for some number of hours | When shopping for nickel-metal hydride (NiMH) chargers it is important to find a charger that will do three things: 1. Charge the cells independently instead of in pairs (this is important in case one battery is bad, which happens frequently), 2. Charge at an appropriate rate --taking at least 1-2 hours (no 15-minute fast chargers!), and 3. Correctly stop charging when the battery is full (rather than charge for some number of hours regar.dless of the charge currently in the battery). Very few chargers you see in stores will do all of these. Note that some of the lithium chargers listed later will also charge NiMH cells correctly. | ||
NiMH cells will last more cycles if they are charged at an appropriate rate. The ideal charging rate is 0.5C, where C is the capacity of the battery in mah. For example, a 2700 mah cell (C=2700) should be charged at about 1350 mA (there is some debate about whether lower rates or a rate up to 1.0C is better). Therefore chargers with a charge rate that can be selected by the user are preferred. For capacity testing, the discharge rate is usually 0.20 to 0.25C. | NiMH cells will last more cycles if they are charged at an appropriate rate. The ideal charging rate is 0.5C, where C is the capacity of the battery in mah. For example, a 2700 mah cell (C=2700) should be charged at about 1350 mA (there is some debate about whether lower rates or a rate up to 1.0C is better). Therefore chargers with a charge rate that can be selected by the user are preferred. For capacity testing, the discharge rate is usually 0.20 to 0.25C. | ||
=== AA/AAA Chargers === | === AA/AAA Chargers which can Measure Cell Capacity === | ||
[[File:Maha-c9000.jpg|thumb|The Powerex Maha-C9000 AA/AAA battery charger and conditioner]] | [[File:Maha-c9000.jpg|thumb|The Powerex Maha-C9000 AA/AAA battery charger and conditioner]] | ||
* [http://www. | * [http://www.amazon.com/gp/product/B00454YCWY?ie=UTF8&tag=tedsbatterpac-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B00454YCWY Maha Powerex MH-C9000 WizardOne Charger-Analyzer] charges 4 AA or AAA NiMH batteries. It charges cells individually at a user-selectable rate and cuts off when the battery is full (actually it has a small topping off charge and a very slight trickle charge to keep the battery full). It can also discharge batteries to determine their capacity (has LCD display), or apply a "break-in" charge. It is often recommended in the CPF forums. About $50. [http://www.mahaenergy.com/download/mhc9000.pdf Manual] [http://www.candlepowerforums.com/vb/showthread.php?p=1891028 Review by Silverfox] | ||
* [http://www.amazon.com/ | * [http://www.amazon.com/gp/product/B004J6DLD4?ie=UTF8&tag=tedsbatterpac-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B004J6DLD4 La Crosse Technology BC-1000 AlphaPower Battery Charger] is similar to the Maha MH-C9000, but it is smaller and usually comes packaged with 4 AA and 4 AAA NiMH batteries (see caveat later). It lacks the "break-in" charge and can not discharge a battery without subsequently recharging it. It is usually about $60. It was formerly called the BC-900, then the BC-9009, but all three models are essentially the same. The [http://www.amazon.com/gp/product/B000RSOV50?ie=UTF8&tag=tedsbatterpac-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B000RSOV50 BC-700 charger] is a less powerful version, usually less than $40. Some Amazon reviewers reported problems with the BC-9009 chargers melting a few years ago, summarized in this [http://www.candlepowerforums.com/vb/showthread.php?t=252188 CPF thread], but the BC-1000 appears to have been redesigned on the inside to avoid this problem. [http://www.lacrossetechnology.com/bc1000/manual.pdf Manual] | ||
=== AA/AAA Chargers which Cannot Measure Cell Capacity === | |||
* [http://www.amazon.com/gp/product/ | * [http://www.amazon.com/gp/product/B00JHKSLM8?ie=UTF8&tag=tedsbatterpac-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B00JHKSLM8 Panasonic BQ-CC17] - 4 cell compact AA/AAA charger charges cells individually with indicator lights when charging is complete for each cell. Applies a small topping off charge and no trickle charge. Recent price at Amazon was around $13 without batteries. Review: [http://budgetlightforum.com/node/38195 HKJ] | ||
* [http://www.thomasdistributing.com/maha-mh-c800s-battery-charger.htm Maha MH-C800S] - 8-cell smart charger with LCD display. Has fast (1000mA) or gentle (500mA) charging mode (lower rates for AAA cells), conditioning cycle, 100-240V power. $57. MH-C801D is similar but has twice the charging rate (2000 mA default rate is too high for most batteries) and costs a little more. [http://www.candlepowerforums.com/vb/showthread.php?t=137843 CPF thread] [http://www.mahaenergy.com/download/mhc800s.pdf Manual] | * [http://www.thomasdistributing.com/maha-mh-c800s-battery-charger.htm Maha MH-C800S] - 8-cell smart charger with LCD display. Has fast (1000mA) or gentle (500mA) charging mode (lower rates for AAA cells), conditioning cycle, 100-240V power. $57. MH-C801D is similar but has twice the charging rate (2000 mA default rate is too high for most batteries) and costs a little more. [http://www.candlepowerforums.com/vb/showthread.php?t=137843 CPF thread] [http://www.mahaenergy.com/download/mhc800s.pdf Manual] | ||
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=== AAA/AA/C/D 9V Chargers === | === AAA/AA/C/D 9V Chargers === | ||
*[http://www.amazon.com/ | *[http://www.amazon.com/gp/product/B003V89RYS?ie=UTF8&tag=tedsbatterpac-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B003V89RYS Ansmann Energy 8 Plus] - A consistent award winner in Photography magazines. 1-6 AAA/AA, 1-4 C/D, 1-2 9V. Ni-Cd or NiMH. [http://www.amazon.com/Ansmann-5207123-Energy-16-Charger/dp/B00017LRCC Ansmann Energy 16] is similar but has twice as many bays. Auto discharges to avoid memory effect. Charges each battery individually, based upon readings taken once each minute. Charge rate is not user-selectable, but rates are appropriate (300 mA for AAA, 700 mA for AA, and 1000 mA for C or D). [http://www.ansmann.de/cms/fileadmin/ansmann-www/products/chargers_power-supplies/5207132/5207132-Energy-8-manual.pdf Manual] | ||
*[http://www. | *[http://www.thomasdistributing.com/MAHA-MH-C808M-AA--AAA--C--D-Battery-Charger_p_244.html Maha MH-C808M] - 8-cell for AAA, AA, C, or D (no 9V). Has fast (2000mA for AA, 700mA for AAA) or gentle (1000mA for AA, 350 mA for AAA) charging cycle. This could be too fast for some batteries. Sanyo recommend a maximum charge rate of 950mA for their Eneloop AA cells for example. Can condition batteries and has LCD display. $90. Review: [http://candlepowerforums.com/vb/showpost.php?p=1211333&postcount=1 CPF thread] [http://www.mahaenergy.com/download/mhc808m.pdf Manual] | ||
* [http://www.amazon.com/gp/product/ | *[http://www.amazon.com/gp/product/B000A0IL9C?ie=UTF8&tag=tedsbatterpac-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B000A0IL9C Rayovac PS3 Rechargeable Battery Universal Charger] - Has four bays with independent charging, but you can put two AA or AAA batteries in one bay (which you would want to avoid). As long as batteries are charged individually, this should work. It is a very old model charger (introduced no later than 2001). $22. [http://www.candlepowerforums.com/vb/showthread.php?t=219300 CPF thread] [http://www.rayovac.com/recharge/manuals/ib_ps3.pdf manual] | ||
=== Not Recommended === | === Not Recommended === | ||
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Duracell: CEF14DX¹, CEF24¹, CEF26¹² | Duracell: CEF14DX¹, CEF24¹, CEF26¹² | ||
Energizer: CH15MN², CH1HR², CHCC³, CHCVM¹, CHDC¹³, CHFCV¹, CHFM¹, CHVC3¹ | Energizer: CH15MN², CH15MN2², CH1HR², CHCC³, CHCVM¹, CHDC¹³, CHDC8¹, CHFCV¹, CHFCV2¹³, CHFM¹, CHP4¹, CHP42¹, CHVC3¹³, CHVCM¹³, CHVCM3¹ | ||
Kodak: K620¹, K6200², K6600¹ | Kodak: K620¹, K6200², K6600¹ | ||
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Sanyo: MQN06U¹ | Sanyo: MQN06U¹ | ||
Sony: BCG-34HUE² | Sony: BCG-34HH¹, BCG-34HUE² | ||
Most Vanson chargers | Most Vanson chargers | ||
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==Lithium Ion Chargers== | ==Lithium Ion Chargers== | ||
Li-ion chargers aren't as commercially widespread as NiMH chargers. Precautions must be taken to avoid overheating cells and they should be monitored while charging. Some people only charge li-ion cells in their fireplace or in a steel bucket! For tips on safely using Li-ion cells refer to [http://www.candlepowerforums.com/vb/showthread.php?t=235164 this post]. The important thing for li-ion chargers is to correctly stop charging when the battery voltage reaches 4.2 volts (for a typical 3.7 volt cell) and not to charge at a rate exceeding the capacity of the cell (e.g. "1C" for an 800 mAh battery is 800 mA). See [http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries this article] from Battery University for information about properly charging li-ion cells. A good charger will slow the charge rate as the battery gets closer to being fully charged. | [[File:Digichargerd4.jpg|thumb|Nitecore Digicharger D4 is a 4-bay charger with digital readout]]Li-ion chargers aren't as commercially widespread as NiMH chargers. Precautions must be taken to avoid overheating cells and they should be monitored while charging. Some people only charge li-ion cells in their fireplace or in a steel bucket! For tips on safely using Li-ion cells refer to [http://www.candlepowerforums.com/vb/showthread.php?t=235164 this post]. The important thing for li-ion chargers is to correctly stop charging when the battery voltage reaches 4.2 volts (for a typical 3.7 volt cell) and not to charge at a rate exceeding the capacity of the cell (e.g. "1C" for an 800 mAh battery is 800 mA). See [http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries this article] from Battery University for information about properly charging li-ion cells. A good charger will slow the charge rate as the battery gets closer to being fully charged. All of the chargers below charge NiMH as well as lithium ion cells. | ||
* [http://www. | * [http://www.gearbest.com/chargers/pp_260891.html SkyRC MC3000] a well regarded 4-bay charger that can do just about anything including testing and charging of all kinds of batteries, including 26650 size at up to 3000mA (4 batteries at once) and discharging at up to 2000mA (1 battery). Can charge/discharge a battery for storage. Has USB and Bluetooth computer connectivity. Firmware can be updated. $89-$99 at GearBest. Review by [http://budgetlightforum.com/node/43699 HKJ] | ||
* [http://www. | * [http://www.gearbest.com/chargers/pp_173012.html Opus BT-C3100] Popular 4-bay charger that can test capacity of cells at a selectable discharge rate of up to 1000mA down to 2.8V. Tests internal resistance of a battery to tell you how healthy it is. Charges at a user selectable rate from 200mA up to 1000mA with 4 cells or 2000mA with 2 cells. Can charge batteries to 3.7V (LiFePo), 4.2V (most lithium ion batteries), or 4.35V (some lithium ion batteries designed for this voltage). Also charges NiMH batteries. The BT-C3100 v2.2 ([http://www.gearbest.com/chargers/pp_173012.html $34] at Gearbest) appears to be the same charger as the BT-3400 which was sold at Amazon. Review of v2.1 by [http://budgetlightforum.com/node/33910 HKJ]. | ||
* [http://www. | * [http://www.illumn.com/batteries-chargers-and-powerpax-carriers/nitecore-d4-digicharger.html Nitecore Digicharger D4] An easy to use 4-bay charger similar to the I4 below, but with a digital readout for voltage and current (about $25-30) as well as a 2-bay [http://www.illumn.com/batteries-chargers-and-powerpax-carriers/nitecore-d2-digicharger.html D2]. Maximum charging current is 750mA, but only 375mA when charging 3 or 4 batteries (slots 1 and 4 share a channel, slots 2 and 3 are the other channel). Has an option for low current (150mA) for charging 10440 an 14500 batteries. Can also charge LiFePO cells which have a lower maximum voltage. Review by [http://budgetlightforum.com/node/35145 HKJ]. | ||
* [http://www. | * [http://www.illumn.com/batteries-chargers-and-powerpax-carriers/nitecore-i4-intellicharger-2014-edition.html Nitecore Intellicharger i4] - 4-bay 2-channel charger (Bays 1 and 3 share a channel, as do 2 and 4). Charges li-ion cells as well as NiMH without the display and options of the D4 model. Does not have a low current option for smaller li-ion cells and is not for LiFePo cells. Usually around $15-20. Reviews: [http://budgetlightforum.com/node/9508 HKJ], [http://www.candlepowerforums.com/vb/showthread.php?336936 Selfbuilt]. Similar [http://www.illumn.com/batteries-chargers-and-powerpax-carriers/nitecore-intellicharge-i2.html 2-bay model]. | ||
* [http://www.sbflashlights.com/Batteries-Chargers/Xtar-VP4-p376.html XTAR VP4] - 4-bay charger with digital readout. About $40. Review: [http://budgetlightforum.com/node/36335 HKJ]. A 2-bay version is also available. | |||
==Hobby Chargers== | ==Hobby Chargers== | ||
[[File:Turnigy.jpg|thumb|Turnigy Accucell 6 hobby charger]]Hobby chargers are built to charge battery packs that are often used with remote control cars, planes, boats, etc. They will charge packs of multiple cells and therefore must have higher power and typically have 12V input (RC users will charge from their car or a battery in the field). Due to the variety of cells they charge, they do not usually include battery holders, however most users will use strong neodymium magnets to hold the alligator clips to the ends of a battery as [http://www.candlepowerforums.com/vb/showthread.php?t=293505&p=3539368#post3539368 shown here]. They can be used to charge a wide variety of battery chemistries and combinations of cells. Here is a [http://www.lygte-info.dk/info/HobbyChargers%20UK.html good introduction] to hobby chargers. | [[File:Turnigy.jpg|thumb|300px|Turnigy Accucell 6 hobby charger]]Hobby chargers are built to charge battery packs that are often used with remote control cars, planes, boats, etc. They will charge packs of multiple cells and therefore must have higher power and typically have 12V input (RC users will charge from their car or a battery in the field). Due to the variety of cells they charge, they do not usually include battery holders, however most users will use strong neodymium magnets to hold the alligator clips to the ends of a battery as [http://www.candlepowerforums.com/vb/showthread.php?t=293505&p=3539368#post3539368 shown here]. They can be used to charge a wide variety of battery chemistries and combinations of cells. Here is a [http://www.lygte-info.dk/info/HobbyChargers%20UK.html good introduction] to hobby chargers. Hobby chargers can test the capacity of a battery by discharging it. When charging, they will tell you how much charge is going into the battery, reading out voltage and current during the process, and cut off when the battery is full, or cut off based on time or amount of charge applied. They can also charge a li-ion battery to 3.8V for storage (it is not good to store li-ion batteries fully charged or discharged). They are not as easy to use, but do a lot more than just give you a green light when the battery is done. | ||
*[http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7028&aff=261539 Turnigy Accucel-6] 60W 5A Balancer/Charger. Very popular and not as expensive as the Bantam charger that it copies. Seems to work well with [http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct= | *[http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7028&aff=261539 Turnigy Accucel-6] 60W 5A Balancer/Charger. Very popular and not as expensive as the Bantam charger that it copies. Has a maximum discharge rate of 1A. Seems to work well with [http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=20968&aff=261539 this power supply] though it can also be found on eBay for less (seller toymodel888 sells 12V 5A adapters for IMAX B6 which work great for $8 shipped). Can also be used with this [http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11777&aff=261539 temperature probe] to make sure battery is not overheating (set to 45°C from default of 80°). [http://www.hobbyking.com/hobbyking/store/uploads/ACCUCEL_manual.pdf Manual] [http://budgetlightforum.com/node/2128 Review]. | ||
*[http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7523&aff=261539 Turnigy Accucel-8] 150W 7A Balancer/Charger. More power than you really need for charging flashlight batteries and requires a heavier duty power supply. | *[http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7523&aff=261539 Turnigy Accucel-8] 150W 7A Balancer/Charger. More power than you really need for charging flashlight batteries and requires a heavier duty power supply like [http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=20971&aff=261539 this one]. | ||
*[http://www.jun-si.com/EnProductShow.asp?ID=91 iCharger 106B+] - Multifunction battery balance Charger (250W 6s Balance/Charger/Discharger). | *[http://www.jun-si.com/EnProductShow.asp?ID=91 iCharger 106B+] - Multifunction battery balance Charger (250W 6s Balance/Charger/Discharger). | ||
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*[http://www.jun-si.com/EnProductShow.asp?ID=93 iCharger 1010B+] - Multifunction battery balance Charger (300W 10s Balance/Charger/Discharger) | *[http://www.jun-si.com/EnProductShow.asp?ID=93 iCharger 1010B+] - Multifunction battery balance Charger (300W 10s Balance/Charger/Discharger) | ||
# Available here - [http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6609&aff=261539 HobbyKing] | # Available here - [http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6609&aff=261539 HobbyKing] | ||
# You can buy it in USA - [http://progressiverc.com/ | # You can buy it in USA - [http://progressiverc.com/ ProgressiveRC] | ||
# Support forum - [http://www.rcgroups.com/forums/showthread.php?t=839657 RCGroups] | # Support forum - [http://www.rcgroups.com/forums/showthread.php?t=839657 RCGroups] | ||
# Manual - [http://www.jun-si.com/UploadFiles/iC106B+_en.pdf Shenzhen Junsi Electronic Co. LTD] | # Manual - [http://www.jun-si.com/UploadFiles/iC106B+_en.pdf Shenzhen Junsi Electronic Co. LTD] | ||