Member Avatar for cambalinho

my mobile batery is BL-5F:
- 950mAh;
- 3,7V;
- 3,5Wh.

the BL-6F:
- 1200mAh;
- 3,7V;
- 4,4Wh.
the have the connection in same place. the 6F give me much more time with mobile.. and the Volts are the same. but i'm confused with Wh.
it's bad give more Wh to a mobile? it can damage the mobile?

Edited by cambalinho
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Good point, — and nicely answered by . In practice a higher‑capacity replacement that uses the same nominal voltage and the proper connector/terminal orientation will simply run the phone longer; it won’t “force” extra voltage into the handset. A few practical checks and safety notes make that answer complete. Battery basics — SparkFun. (learn.sparkfun.com)

Quick compatibility checklist you can follow before you swap packs: confirm the replacement’s part number is listed for your phone model; make sure the contacts and polarity line up; check the physical profile — some higher‑capacity “extended” cells require a thicker back cover or different shell; and verify the pack includes the usual protection PCB for over‑charge/over‑discharge/current protection. If the battery was made specifically for your model, those items are normally handled by the battery/pack design. Retail note on extended covers. (batterycanada.com)

Safety and quality: buy reputable or manufacturer‑approved packs (counterfeit/cheap cells are the real risk). Look for safety certifications and avoid packs that feel soft, swollen, or get hot during normal use — a swollen pack should be taken out of service and recycled immediately. Public safety guidance also warns against using incompatible or uncertified batteries and chargers. CPSC advice on replacement batteries and [Battery University on Li‑ion safety]. (cpsc.gov)

If you want longer runtime now without swapping, reduce display brightness and timeout, disable unnecessary background sync or radio (3G/always‑on data), turn off GPS when idle, and check for apps that wake the radio often. Modern Li‑ion packs don’t need the old “three full charge/discharge cycles” conditioning many sellers mention, but you can calibrate the phone’s fuel gauge once by charging to full then letting it discharge once if the meter seems inaccurate. For longer battery life overall, follow the standard Li‑ion care tips (avoid high heat, avoid deep discharges, and use approved chargers). [How to prolong Li‑ion batteries — Battery University]. (batteryuniversity.com)

If anything about fit, connector layout, or labeling looks off, stop and ask the seller/manufacturer — or take the pack to an authorised service point.

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Member Avatar for rubberman 
Wh == Watt Hours
Watts == volts * amps
Ah == Amp Hours
Watt Hours == Amp Hours * volts

So, 1200mAh == 1.2Ah which  * 3.7V == 4.44Wh
    950mAh == .95Ah which * 3.7V == 3.51Wh

This is just about what the specs say. They are just rounding down to the nearest decimal place.

So, no. It will not damage your gear. The key is the volts provided. The Amp Hours / Watt Hours is the capacity of the battery. Since they provide the same voltage, the 1200mAh battery will, as seen, provide more capacity to run without charging.

commented: thanks for all +3
Member Avatar for cambalinho

thanks for correct me that. now i know that i can change my BL-5F to BL-6F without a problem ;)
because i use a diferent theme(needs more batery) and i use 3G mobile network(needs more batery too), and the original batery don't works 24h of capacity :(
thanks for all.. thanks

commented: Remember, when it comes to capacity (Amp Hours), more is better! +12
Member Avatar for rubberman

Glad to help. Remember, the voltage is key. Amps is the current it can provide, so you want at least as much as the device can draw, otherwise, the power factor staying equal, it will drop the voltage and can damage the device. Basic electricity - high school physics stuff. Here is the wikipedia article on Ohm's Law: http://en.wikipedia.org/wiki/Ohm%27s_law

commented: thanks for all +0
Member Avatar for cambalinho

thanks for all my friend.... thanks

Edited by cambalinho
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