# Battery & Chargers **URL:** https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=7 [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) **Page:** 8 --- ## [Battery capacity meter](https://community.electricforum.com/t/battery-capacity-meter/5823)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 3\ **Last updated:** [March 8, 2016, 6:08pm UTC](https://community.electricforum.com/t/battery-capacity-meter/5823 "2016-03-08T18:08:40Z")
Started talking about this project in another thread. Time to start new one. Meter came in today. Load bank is mounted. A couple leads and should be ready to test. No wonder I can't get anything done. Jump from one… --- ## [Cell balancing of Li Ion Battery Pack](https://community.electricforum.com/t/cell-balancing-of-li-ion-battery-pack/5822)
**Author:** [@keerthiraajan](https://community.electricforum.com/u/keerthiraajan)\ **Replies:** 0\ **Last updated:** [March 5, 2016, 7:05pm UTC](https://community.electricforum.com/t/cell-balancing-of-li-ion-battery-pack/5822 "2016-03-05T19:05:17Z")
I have studied the various cell balancing techniques of Li ion battery. Many papers suggested that parallel connection will be self balancing. So, if two series pack of four 3.3v Li ion battery is put in parallel.Does it… --- ## [Where are Level 2 or RDC charging station needed?](https://community.electricforum.com/t/where-are-level-2-or-rdc-charging-station-needed/5801)
**Author:** [@Research\_help\_needed](https://community.electricforum.com/u/Research_help_needed)\ **Replies:** 1\ **Last updated:** [February 24, 2016, 7:14am UTC](https://community.electricforum.com/t/where-are-level-2-or-rdc-charging-station-needed/5801 "2016-02-24T07:14:03Z")
Hello all I am very new to the Forum but could really use your assistance in helping me identify where you would most like to see level 2 or Rapid DC charging stations installed in the San Diego area any feedback you pro… --- ## [Wireless charging](https://community.electricforum.com/t/wireless-charging/5746)
**Author:** [@slickric](https://community.electricforum.com/u/slickric)\ **Replies:** 1\ **Last updated:** [January 21, 2016, 6:24pm UTC](https://community.electricforum.com/t/wireless-charging/5746 "2016-01-21T18:24:43Z")
is it possible to use Smartphone Wireless Charging concept put it into vehicle? Like batteries charging meanwhile car is parking. --- ## [How much do you save each month compared to petrol/gasoline vehicles?](https://community.electricforum.com/t/how-much-do-you-save-each-month-compared-to-petrol-gasoline-vehicles/5099)
**Author:** [@EvForum](https://community.electricforum.com/u/EvForum)\ **Replies:** 1\ **Last updated:** [January 8, 2016, 6:07am UTC](https://community.electricforum.com/t/how-much-do-you-save-each-month-compared-to-petrol-gasoline-vehicles/5099 "2016-01-08T06:07:01Z")
I would be very interested to learn how much EV users save on a monthly basis compared to petro/gasoline cars. I have read that the monthly fuel bill for an EV will be around 10% of the cost of refuelling petro/gasoline … --- ## [Heads Up](https://community.electricforum.com/t/heads-up/5709)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 1\ **Last updated:** [January 3, 2016, 11:59am UTC](https://community.electricforum.com/t/heads-up/5709 "2016-01-03T11:59:25Z")
Bought a new set of Flooded's Friday. Just for the hell of it I checked the water. It was DOWN to barely above the plates. Is this the way it is now? Complaints registered to all parties. Who the hell checks water… --- ## [Porsche Cayenne S e-hybrid wont charge at work](https://community.electricforum.com/t/porsche-cayenne-s-e-hybrid-wont-charge-at-work/5704)
**Author:** [@EVSE2015](https://community.electricforum.com/u/EVSE2015)\ **Replies:** 5\ **Last updated:** [December 29, 2015, 4:46pm UTC](https://community.electricforum.com/t/porsche-cayenne-s-e-hybrid-wont-charge-at-work/5704 "2015-12-29T16:46:13Z")
Hi everyone, and thanks for any thoughts. I have had a Porsche Cayenne S E-hybrid with 7.2kw charger since the summer. It charges with no issue at home but it won't ever charge at my office using the level 2 charging sta… --- ## [2002 Gem Problems](https://community.electricforum.com/t/2002-gem-problems/5521)
**Author:** [@jwrdsr](https://community.electricforum.com/u/jwrdsr)\ **Replies:** 2\ **Last updated:** [December 29, 2015, 9:37am UTC](https://community.electricforum.com/t/2002-gem-problems/5521 "2015-12-29T09:37:47Z")
I have a 2002 Gem car and have had nothing but problems. I bought it on line and what a surprise I got when I received it. It came with 4 batteries and did run but not well. Some of the cables were bolted together. I ha… --- ## [Advantages of Electric Cars](https://community.electricforum.com/t/advantages-of-electric-cars/3213)
**Author:** [@billlikecar](https://community.electricforum.com/u/billlikecar)\ **Replies:** 8\ **Last updated:** [December 11, 2015, 5:23pm UTC](https://community.electricforum.com/t/advantages-of-electric-cars/3213 "2015-12-11T17:23:58Z")
Advantages The number one advantage of an electric vehicle is that no gas is required. One example is the Chevy Volt. It has a battery range of 40 miles. That means it can drive for 40 miles without using gas. 40 miles… --- ## [Review of the Reva G-Wiz](https://community.electricforum.com/t/review-of-the-reva-g-wiz/3874)
**Author:** [@Editor](https://community.electricforum.com/u/Editor)\ **Replies:** 1\ **Last updated:** [December 6, 2015, 11:14pm UTC](https://community.electricforum.com/t/review-of-the-reva-g-wiz/3874 "2015-12-06T23:14:55Z")
The Reva G-Wiz is something of an anomaly in the world of electric cars because officially it is not classed as a car but more as a motorcycle. However, it is worth noting that despite the fact it is not officially class… --- ## [Experience Li-Ion pulse charging](https://community.electricforum.com/t/experience-li-ion-pulse-charging/5624)
**Author:** [@Frommknecht](https://community.electricforum.com/u/Frommknecht)\ **Replies:** 0\ **Last updated:** [November 26, 2015, 12:38am UTC](https://community.electricforum.com/t/experience-li-ion-pulse-charging/5624 "2015-11-26T00:38:32Z")
Have someone experience with Li-Ion pulse charging? --- ## [Lead acid batteries Ah capacity](https://community.electricforum.com/t/lead-acid-batteries-ah-capacity/5569)
**Author:** [@EvForum](https://community.electricforum.com/u/EvForum)\ **Replies:** 3\ **Last updated:** [November 23, 2015, 4:34pm UTC](https://community.electricforum.com/t/lead-acid-batteries-ah-capacity/5569 "2015-11-23T16:34:26Z")
I was asked an interesting question to which I don't know the answer:- Does anyone know what is the lightest weight or smallest lead acid batteries with the highest Ah capacity on the market today? --- ## [Bicycle with Semi-Horn](https://community.electricforum.com/t/bicycle-with-semi-horn/5608)
**Author:** [@SamyBoy](https://community.electricforum.com/u/SamyBoy)\ **Replies:** 1\ **Last updated:** [November 23, 2015, 7:01am UTC](https://community.electricforum.com/t/bicycle-with-semi-horn/5608 "2015-11-23T07:01:43Z")
Hello! Not sure if this is the best place to post but here we go: I would like to know how I would go about putting a semi-truck horn working on vacuum onot a bicycle. I have seen some YouTube videos, but I do not re… --- ## [Nickel metal batteries](https://community.electricforum.com/t/nickel-metal-batteries/5606)
**Author:** [@philippe](https://community.electricforum.com/u/philippe)\ **Replies:** 2\ **Last updated:** [November 23, 2015, 6:11am UTC](https://community.electricforum.com/t/nickel-metal-batteries/5606 "2015-11-23T06:11:09Z")
Hi, I am looking for a supplier of nickel zinc or nickel metal hydrate batteries and sofar I have not found any. Do you know of any source in Canada or in the US. Thanks Philippe:) --- ## [Hint](https://community.electricforum.com/t/hint/5582)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 4\ **Last updated:** [November 21, 2015, 5:47pm UTC](https://community.electricforum.com/t/hint/5582 "2015-11-21T17:47:59Z")
When your Gels are on their last legs change the charge algorithm to flooded. Sometimes will give you a few more miles. Rodney --- ## [Are EV batteries based on quantum physics the future?](https://community.electricforum.com/t/are-ev-batteries-based-on-quantum-physics-the-future/5413)
**Author:** [@Editor](https://community.electricforum.com/u/Editor)\ **Replies:** 3\ **Last updated:** [November 13, 2015, 7:16pm UTC](https://community.electricforum.com/t/are-ev-batteries-based-on-quantum-physics-the-future/5413 "2015-11-13T19:16:33Z")
The following assumption may be very wide of the mark but it should start an interesting conversation:- The simple idea behind quantum physics is the phenomenon whereby one atom/particle for example can exist in two di… --- ## [Replacing Batteries](https://community.electricforum.com/t/replacing-batteries/5554)
**Author:** [@Bugman](https://community.electricforum.com/u/Bugman)\ **Replies:** 2\ **Last updated:** [November 11, 2015, 11:21am UTC](https://community.electricforum.com/t/replacing-batteries/5554 "2015-11-11T11:21:48Z")
I am going to replace batteries in my 2011 e2. Do you leave main switch off and remove one battery at a time or all six and make a diagram where all the wires go? --- ## [C&D Dynasty AGM](https://community.electricforum.com/t/c-d-dynasty-agm/5527)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 0\ **Last updated:** [November 4, 2015, 3:18pm UTC](https://community.electricforum.com/t/c-d-dynasty-agm/5527 "2015-11-04T15:18:01Z")
Anyone heard of them? Wanted to share my experience. I bought two of these on craigslist in 2012. They were first sold in 2007 and pulled from UPS for scheduled replacement in 2011. Put one in my boat and one in a pa… --- ## [Dyson buys battery start-up company for $90m](https://community.electricforum.com/t/dyson-buys-battery-start-up-company-for-90m/5456)
**Author:** [@EvForum](https://community.electricforum.com/u/EvForum)\ **Replies:** 1\ **Last updated:** [November 3, 2015, 10:39am UTC](https://community.electricforum.com/t/dyson-buys-battery-start-up-company-for-90m/5456 "2015-11-03T10:39:34Z")
Dyson, best know for its revolutionary range of vacuums, has bought battery start up company Sakti3 for $90m after a $15m investment just a few months ago. Is Dyson now getting ready for its much rumoured assault of t… --- ## [New lithium-ion battery technology](https://community.electricforum.com/t/new-lithium-ion-battery-technology/5497)
**Author:** [@Greendriver](https://community.electricforum.com/u/Greendriver)\ **Replies:** 1\ **Last updated:** [November 3, 2015, 10:31am UTC](https://community.electricforum.com/t/new-lithium-ion-battery-technology/5497 "2015-11-03T10:31:48Z")
Check out the article below, a new technology has acheived a 40% - 60% in crease in lithium-ion battery energy density:- New tech produces lighter, long-lasting batteries from silicon | Business Standard News --- ## [Online electric vehicles](https://community.electricforum.com/t/online-electric-vehicles/5473)
**Author:** [@jeetshek92](https://community.electricforum.com/u/jeetshek92)\ **Replies:** 3\ **Last updated:** [October 25, 2015, 8:53pm UTC](https://community.electricforum.com/t/online-electric-vehicles/5473 "2015-10-25T20:53:57Z")
Hi all, I was wondering to have feedback from the community on Online electric vehicles. This technology basically would mean that everytime the EV passes through the lane, it gets charged. It works on the principle of r… --- ## [Would road signs indicating EV charging points help?](https://community.electricforum.com/t/would-road-signs-indicating-ev-charging-points-help/5470)
**Author:** [@EvForum](https://community.electricforum.com/u/EvForum)\ **Replies:** 2\ **Last updated:** [October 23, 2015, 6:30pm UTC](https://community.electricforum.com/t/would-road-signs-indicating-ev-charging-points-help/5470 "2015-10-23T18:30:42Z")
The UK government is now under pressure to introduce official road signs indicating the presence of electric vehicle charging points. Would this help in your area? --- ## [Gem Problems](https://community.electricforum.com/t/gem-problems/5432)
**Author:** [@jwrdsr](https://community.electricforum.com/u/jwrdsr)\ **Replies:** 0\ **Last updated:** [October 13, 2015, 9:40am UTC](https://community.electricforum.com/t/gem-problems/5432 "2015-10-13T09:40:54Z")
I have a 2002 Gem Car that I just purchased and I need help. When I got the car it only had 4 batteries and it did run. I now have put in 6 batteries and even with the manual I am having a problem with the cables. I have… --- ## [Self Charging Battery](https://community.electricforum.com/t/self-charging-battery/5235)
**Author:** [@mallardradio](https://community.electricforum.com/u/mallardradio)\ **Replies:** 6\ **Last updated:** [October 8, 2015, 7:05am UTC](https://community.electricforum.com/t/self-charging-battery/5235 "2015-10-08T07:05:18Z")
Owner has a version of this for automotive batterys as well. If you want to see the video of it check out youtube its listed as thermal electret battery and the user name is mallardradio. I haven't been on here long enou… --- ## [Odmon](https://community.electricforum.com/t/odmon/5380)
**Author:** [@odmon](https://community.electricforum.com/u/odmon)\ **Replies:** 1\ **Last updated:** [October 1, 2015, 4:06pm UTC](https://community.electricforum.com/t/odmon/5380 "2015-10-01T16:06:27Z")
I have a Ng1 charger and it does nothing. I replaced the fuse but still no activation. It is getting power to the charger. Any other suggestions? --- ## [E825 fribnt battery compartment](https://community.electricforum.com/t/e825-fribnt-battery-compartment/5365)
**Author:** [@4826](https://community.electricforum.com/u/4826)\ **Replies:** 5\ **Last updated:** [September 29, 2015, 4:43pm UTC](https://community.electricforum.com/t/e825-fribnt-battery-compartment/5365 "2015-09-29T16:43:14Z")
Could someone please post a picture of the front battery compartment of a E 825. Mine is a 2002. I have a question on wiring. Thank you s0o much:) --- ## [Individual cell charging](https://community.electricforum.com/t/individual-cell-charging/5358)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 6\ **Last updated:** [September 26, 2015, 5:43pm UTC](https://community.electricforum.com/t/individual-cell-charging/5358 "2015-09-26T17:43:44Z")
I've been thinking about LiFePO4 conversion and charging schemes. Both my cars have delta-q. Found a source for 10a or 20a single cell isolated chargers. Total cost is not much more than a good brand 48v or 72v 20a c… --- ## [Step-up Booster/joule thief/buck converter for project? Will it work?](https://community.electricforum.com/t/step-up-booster-joule-thief-buck-converter-for-project-will-it-work/5351)
**Author:** [@Invalid](https://community.electricforum.com/u/Invalid)\ **Replies:** 7\ **Last updated:** [September 25, 2015, 1:22pm UTC](https://community.electricforum.com/t/step-up-booster-joule-thief-buck-converter-for-project-will-it-work/5351 "2015-09-25T13:22:13Z")
Hi, I am wondering if I can get more knowledge on the Step-up Booster, they are also called joule thief, Buck converter and other nicknames. So I have a motor that needs about 50 watts, draw about anywhere from 4 amp t… --- ## [Bosch looking to introduce new electric car batteries](https://community.electricforum.com/t/bosch-looking-to-introduce-new-electric-car-batteries/5347)
**Author:** [@Editor](https://community.electricforum.com/u/Editor)\ **Replies:** 0\ **Last updated:** [September 23, 2015, 3:57am UTC](https://community.electricforum.com/t/bosch-looking-to-introduce-new-electric-car-batteries/5347 "2015-09-23T03:57:00Z")
While many of the big names such as Tesla grab the headlines in the electric vehicle market, behind the scenes there is intense activity in the area of lithium ion batteries. These are the food for the modern day electri… --- ## [New battery technology extends EV journey capacity](https://community.electricforum.com/t/new-battery-technology-extends-ev-journey-capacity/5338)
**Author:** [@Editor](https://community.electricforum.com/u/Editor)\ **Replies:** 0\ **Last updated:** [September 21, 2015, 9:05am UTC](https://community.electricforum.com/t/new-battery-technology-extends-ev-journey-capacity/5338 "2015-09-21T09:05:07Z")
The average electric car journey capacity could top 200 miles on one charge if a new hydrogen cell proves to be commercially viable. The technology has been created by UK firm Cella Energy using technology which was unce… [Previous page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=6) [Next page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=8)