Is it okay to replace my worn li-polymer 3.8v and 2200maH battery with a li-ion battery with 3.7v and same 2200maH capacity?Will the 0.1v be of any harm to the delicate electronics of the phone?

  • \$\begingroup\$ how are you planning to charge the battery? \$\endgroup\$ – jsotola May 14 '18 at 22:04
  • \$\begingroup\$ Don't. Charging and thresholds are different for those chemistries. \$\endgroup\$ – Andrés May 14 '18 at 22:25
  • \$\begingroup\$ Your battery might explode \$\endgroup\$ – Voltage Spike May 14 '18 at 22:36
  • \$\begingroup\$ 0.1 V no problem and 3.6V float charger is ok too if all you want is a cheap non Mobile solution \$\endgroup\$ – Tony Stewart EE75 May 14 '18 at 23:10
  • \$\begingroup\$ Repair questions are off-topic here. And even if they were not, this is unanswerable because the voltages you quote or the nominal voltages, not the charge cutoff voltages. Such a lack of information about how the actual design works is why repair questions are considered off topic. \$\endgroup\$ – Chris Stratton Aug 12 '19 at 14:08

Charging voltage for the newer Li-Po cells is usually 4.35 V. When you use an older Li-Ion cells in modern phone, the battery standard charge level of 4.20V will be exceeded substanially. It might be OK to charge a 4.2V battery with 4.35 V levels, but battery cycle life will be decreased about 3-4-fold, as this example shows.

But before worry about all this, check the actual charging voltage on your phone, maybe it is just 4.2 V standard.

  • \$\begingroup\$ With all the questions regarding battery swapping Do you know if there is a reference question that could be a generic answer to most common questions (safety, charging caracteristics, etc...)? \$\endgroup\$ – Simon Marcoux May 15 '18 at 1:18
  • \$\begingroup\$ 4.35 V is LiFePO₄ (aka lithium iron phosphate). LiPo is lithium-polymer, which is just a way of manufacturing the cell; there's nothing special about its chemistry. It's 4.2 V just like standard non-polymer li-ions. \$\endgroup\$ – Hearth Dec 14 '19 at 21:06

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