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These batteries have a lot going for them: they come fully charged (like alkaline batteries), and they can hold their charge over many months (unlike regular Ni-MH rechargeables). The charge times are as follows: AA Eneloops charge in 230 minutes, and AAA Eneloops charge in 135 minutes. How about some good battery chargers to go with these batteries?A The chargers featured below are some of the smartest out there — they have built-in protection to prevent overcharging or undercharging.
The drawback is that the single-status LCD panel a long programming sequence makes it a bit difficult to use for multiple cells. Maha’s chargers can restore batteries to their optimal performance level by repeatedly charging and discharging them.
If someone could correct my thinking on this, I always had the perception that standard (non chargeable) AA batteries last longer than ANY rechargeable AA batteries. Does ‘Eneloop’ supply rechargeable 9volt pps batteries and the appropriate charger?
My FRS walkie-talkies (maybe about 20 years old) quit when AAA batteries get to about 1.2v, so recargeables may only last for minutes. If I use an item once per week(like a beard trimmer) for 10 minutes, should I use rechargeable AA Nimh LSD batteries(like Eneloop, Eneloop Pro or Energizers)?
Do I have to completely run out a rechargeable battery before I can charge it again, or can I charge it when I want? I usually do buy packs of 4 and run several cycles in an old fashioned flash light just breaking them in. Personally I would go with the Maha PowerEx a€?Ultimate Professionala€? Charger, It will charge lots of kind of batteries for any use. Battery Polarity Reversal Protection – Prevents Charger damage and operation in case a battery is inserted into the MH-C808M backwards.
Alkaline battery Protection – Automatically recognizes an Alkaline battery and Prevents Charger operation and damage. Yes, the newer NiMh batteries have a longer shelf life, and are generally more reliable than the older kinds. I use rechargeable batteries in every device in my home (requiring batteries), and I don’t have any issues. I use Eneloops with my XBox 360 Wireless controller hooked up to my PC, no problems whatsoever. If the eneloop are the best batteries why doesn’t Panasonic have it’s own top rated charger? Over time I’ve seen a number of battery manufacturers recommend using their chargers only with the batteries they produce. What do you think about SunLabz 2800 mAh AA batteries and their associated smart battery recharging counterpart? Indexed: Gary Brinck, How To, RV Power, RV TechnologyChoosing the Best RV Battery: Which is Right for You? By Gary Brinck Mods, RV Guides, RV Maintenance, RV Repairs Most of us have at least a nodding acquaintance with the battery that start our cars, but how do you choose the right RV battery? Most of us have at least a nodding acquaintance with the battery that start our cars, but what about the batteries used in our Recreational Vehicles? Motorhomes, of course, have an engine and require an engine starting (chassis) RV battery, but this is always separate from the house battery system. The starting (chassis) battery in a motorhome is the same type as used in a car, though often with a larger CCA (Cold Cranking Amps) rating because the engine is larger. Choosing the right RV battery is simply a matter of getting enough CCA to do the job and generally that means replacing the battery with another of the same or larger CCA rating, the same as you would do for your car. Starting batteries are designed to provide a huge amount of power (amps) in a short burst (a few seconds) to get an engine going, but house RV batteries are designed to provide a much smaller amount of amps but over a long period of time, hours instead of seconds.
A RV battery designed for lower power and deep cycling will last longer and perform better than an engine starting battery. Deep cycle battery capacity is measured in AH (Amp-Hours), meaning the total number of amps of power it can deliver over a 20 hour period. An alternative measurement is called RC (Reserve Capacity), which is the number of minutes the battery can sustain a 25 amp load.
This type loses a little of the solution each time it is charged, so requires the addition of some water once in awhile. Gel type batteries use a thick paste electrolyte and are also fully sealed, so they are a good choice as well. A popular choice for an house RV battery is the 6 volt size designed for use in golf carts. It is an extremely rugged, deep cycle design and two of them can be wired in series to form a 12 volt battery that works extremely well in RV applications. Running: 2 Laptops charging, microwave, fridge, lighting, coffee pot, the occasional power tool. Set-up – Use of alternator, not planning to hook up to shore power but would like to have an outside plug-in just in case.
I use a 2000 watt Honda portable generator to recharge the batteries as needed and also occasionally will use the RV’s house generator.
When boondocking I am very conscious of power consumption and normally watch 4 hours of TV on my 32 inch LCD LG TV and use my 2009 24 inch iMac computer for another 4 hours ( these tend to be my maximum use rates). My understanding ( limited I will admit ) is that the battery bank fully charged should give me 220 amp hours of power ( 50% of 4 x 110 amphours ).
My problem is that 3 or 4 hours of the computer running alone will drain the batteries down to a 12.3 reading. My Trimetric meter reading at night when I retire and turn off the inverter is the same the next morning so I think that eliminates the possibility of some phantom draw being the problem, so where should I be looking for a solution to my problem? Over the 2 years the batteries have been cycled probably 100 times more or less and I find I never have to add much distilled water when I check them. Currently, I have mismatched batteries, one deep cell about 3 years old and an auto battery about 2 years old.
Currently, I’ve been Impressed with the specifications and warranty of the Batteries Plus SLI34AGMDPM. Do you have any specific knowledge or recommendations for this or any other similar battery?
Putting a new with old is un equal – the older battery constantly drains energy from the newer one. Lastly, I just installed brand new twin Interstate 2200s in my little 24.5 fifthwheel that I use on the rivers and creeks where ever I go. This answer refers to Trojan batteries (model T105), they are frequently found in RVs and probably what you have.

Although this answer does conclude that wiring in series will prolong battery life compared to the parallel setup, Trojan says that either setup is fine.
But this really is not the case, and the reason has to do with the engineering and materials used to construct the batteries. The plates designed for the T-105 use the same active material and alloy of the group 27 deep cycle batteries but both the T-105 negative and positive plates are 60% thicker than those found in the deep cycle 27 group sizes.
While the capacities are similar (220 versus 225 Amp Hrs.), battery longevity favors the two 6 Volt batteries. Quick question, I just bought a used camp trailer and it had two six volt Trojans in series. Mixing old and new batteries is risky because any substantial difference in performance will decrease the capacity of the new one and might even cause damage to it as the charger strives to bring the poorer battery up to par and thus overcharges the good one.
Can you hook up a new 12v deep cycle battery parallel to one that is the same kind and tests good, but is not new.
Our motorhome house batteries are two Lifeline GPL 24T batteries connected together (parallel). Just bought a used gulfstream motorhome and not sure if when the engine is running if the engine alternator charging both batteries at the same time?
Some one else might want to chime in on this, but you should only connect batteries in parallel that are the same rating. I just bought a used 1997 thor tahoe camping travel trailer a few weeks ago and the previous owner had a 24 and 27 battery. I think you are referring to the RC – Reserve Capacity – rating of the battery?
So I thought it was about time to write a post on the topic.When it comes to batteries application must be considered first. They have a high energy capacity (2500 mAh), and they perform better than similar high-capacity AAs.
Because they can hold their charge for so long, they are suitable for low-drain devices like remote controls and flashlights.
I do not recommend the Energizer or Duracell rechargeable batteries — these name brands seem to produce inferior rechargeables, perhaps to protect their sales of alkaline batteries.
Eneloops can be recharged up to 2100 times, and they will retain their charged capacity even after years of storage. The Eneloop Pro has a capacity of 2500 mAh –this is 500 mAh more than the regular Eneloops. Where I wouldn’t use them, or any other rechargeable, is in life-threatening situations. I then meter each battery after being fully charged INDIVIDUALLY and match the closest batteries as a pairs. A good quality charger will revive and recondition your batteries, and they will indicate if a battery is malfunctioning, which is quite useful. I just have a few questions, will this work on Xbox 360 wireless controllers or are these high powered, and for the charger do I need to purchase a separate one or will the kit(if there is one) be okay since I won’t be doing heavy use for it, just mostly for gaming and for some torch lights at home. These house batteries have different characteristics than the batteries used to start an engine.
The best deep cycle batteries will last three to four times longer than a starting RV battery under the same conditions. Unfortunately, there is no meaningful way to compare AH and RC values, so make sure you compare apples to apples. As with most compromises, they aren’t great for either need, but they may be suitable for some RV battery situations. It’s main advantage is that it is a variation of a starting battery and can be produced by the same manufacturing process, making it a less expensive battery than a true deep cycle.
AGM (Absorbed Glass Mat) batteries retain the electrolyte solution in a sponge made of glass fibers and are totally sealed except for a safety valve. My question is I have 4 12v workaholic U2200 that are ready to replace they have treated me very well.
We just purchased a 2005 Itasci Meridian 40 ‘It has 2 new batteries for the engine but the 4 house batteries are the question. I was wondering what you could recommend for a battery setup + Solar + Inverter for a small dodge promaster conversion. The Trimetric shows 7 amps of power flowing when I use the computer and 5 amps when watching TV. A hydrometer test of all 12 cells of the batteries when at full charge shows them all to be in good shape.
Knowing that nothing in the system is 100% efficient and that the inverter itself consumes power, say I have only 150 amp hours available at full charge.
The price to me is somewhat scary as I have seen in the past, rebates by manufacturer and store totaling about 10%.
Normally it’s just one cell that dies (battery is dead) Because the cell is dead and can never be fully charged the rest of the cells work to charge something which never charges makng all batteries connected useless. I have 1 triple panel 45 watt charging system from harbor freight I use to keep the batteries up daily as I will discharge accordingly at night. People typically buy two 6 Vs because they’re cheaper and smaller than a 12 V battery. The significance of this is that these 6 Volt batteries should have a longer lifespan than the two deep cycle 27 group sizes, if properly cared for. Trojan does state that most people prefer series wiring due to the cost and space advantage. Do, however, check the water in the battery cells regularly – the old charger in your coach will tend to boil away the water. You should verify that voltage remains good at rest and under load, and so a specific gravity (hydrometer) test of the cells on a flooded cell type.
The safest course of action is to replace all batteries at the same time, to assure they have identical characteristics.
By wiring batteries in parallel {Parallel connections (+) to (+) and (-) to (-)} you’re increasing the amp hours but not the voltage. And if so, should I hook 24 up first or the 27th deep cycling battery up first and then combine them? Beyond just an automobile application, you should consider things like off road use, high or low temperatures, and short frequent trips vs. However, they are ideal for use in high-drain electronic devices like digital cameras, where they out-perform alkalines.
Their only potential downside is that they can be charged 500 times — not 2100 times like the regular Eneloops.

You can mix and charge AA, AAA, C and D sized cells at the same time on individual charging circuits. Rechargeable batteries have a cut-off point that is abrupt and you don’t see it coming. For digital cameras (like my 10 year old Canon Powershot 540) they have lasted well over their rated 600 cycles. The charger *does* has short-circuit protection, over charge protection and reverse polarity protection. Do I need to get a more up to date charger for the batteries you have currently recommended? This type is very effective in reducing the loss of electrolyte during charging and is an excellent technology choice. We have a 50 amp service just for the RV and keep it plugged in and still have to use the generator. All worked well last spring while my wife boondocked in a cow pasture while volunteering for the workshops at Sun ‘n Fun in Lakeland. The solar charger can handle another solar panel but the 8 gauge wiring to the batteries I believe will limit me to only another 100 watts when in full sun with max output. Although it depends on your battery needs for your style of camping, there’s probably no need to go buy another battery just for the sake of having the exact same model.
I picked up a new 27 and a new 24 up hoping that that would be okay instead of having like two 24 batteries. However, on average most people will charge their batteries about 100-200 times over a 5 year period. For example, you could check your avalanche before you leave the house and it would read full. After so-so life from the Harbor Freight specials (usually 4-500 of their advertised 800 cycles), I’m getting 3+ years and maybe 800+ cycles from each pair and have taken about 20,000 shots and 500 hours of video.
The better chargers will recondition the batteries, and they allow you to weed out the problematic batteries easily. I have the 3 panels tilted to 40 degrees here in the desert for the winter months, and there are absolutely no shading issues with the panels by roof vents, antennas, ladder tops, trees,etc.
They still work well as long as we don’t intend to use the inverter for the coffee maker or the microwave.
Since I don’t know the type of solar panel or the brand can I get any 100 watt panel with an output of about 16 volts and physically about the same size? I have 720 watts of solar on roof with options for 30 and 45 degree angles depending on winter or summer usage.From the roof, I ran single aught welding cable down. Yes, they can be a bit pricey but like I did, I bought them separately and my expense level until I was completely LED loaded. For example, if you charged your batteries twice a week consistently, it would take 5 years to reach 500 charges. Panasonic recommends keeping the batteries in a cool location to maximize charge retention.
After 5-6 cycles, I get a solid full charge in them and meter test again for matching up pairs. I even have the TV and peripherals and the computer and peripherals each set up on their own power strips and keep these strips unplugged unless I am actually using them.
My goal was to lose the least amount of voltage drop in the distance they needed to rfun gto get to the controller. I prefer the opus charger because I can run test and check the capacity of the batteries to see what useful life they have. I changed the starter relay solenoid and it charged real good for awhile and now the gauge reads about 10 volts when she’s running. The key to batteries isn’t how much mah they hold its how much can be extracted from the battery. Alkaline cells have around 2600-2800 mah but their internal resistance is so high you’ll never get close to all the energy from it. Rechargeable 2450-2550 batteries will provide turbo for slightly over a hour before needed recharging. Meaning, at that point your battery may be discharging and not charging at all.Not fully charging lowers the batteries service life due to excessive sulfation. Flashes cameras and flashlights all recommend nihm rechargeable or lithium primaries and rate there abilities off them not alkalines. The typical warranty periods for batteries is 3 to 5 years.Most batteries will make their warranty periods even with little or no maintenance.
Alkaline also leak, how many times over the years have you opened a old flashlight, remote, kids toy to find the inside completely rusted out.
Just bring the old battery back for a refund of the core charge.Batteries come in all sizes to fit different cars.
Sanyo had to sell that division before the merger with panasonic so panasonic wouldn’t have a monopoly on rechargeable batteries. In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page. If you don’t use many batteries and want to stick with alkaline, purchase them online. Good to have as back up since they last 10+ years I also on Amazon receive 8 lithium batteries aa size monthly that is my new stash I’m collecting as soon as I run through my alkaline batteries it will be nothing but lithium.
Holds 85% energy for 20 years and last much longer then alkaline in high current devices and won’t leak and ruin things. There are many options rechargeable is the best and lithium but alkaline has its place, it’s good for emergency and cheap.
That way I can have weeks worth of lighting if another storm comes and its 3 weeks without electricity again. You can get a decent solar panel for $50 with two usb connections and you can recharge your batteries off the grid if you needed to.
If 100 batteries would last you 3-4 years its cheaper route then rechargeable even if you go all rechargeable I still recommend some back ups. And if you have kids to buy presents for 100 batteries with the toys is always a nice addition.

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